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Hi, I own both and have done for around 18 months (BES870, BES920) both used with a smart grinder pro (the BCG820, not the 800) - and also use both on a regular basis. Apologies in advance when I begin ranting:
Now I'm sure plenty will scream blasphemy - but in the actual shot quality there is very little in it. With the 870 I personally run some hot water through the portafilter before I attach the group handle - gets everything nicely preheated to keep the temp as stable throughout the shot as possible (ideal).
Using the same beans, and similar settings, they are very, very similar. An exact comparison is difficult though because with the stock baskets, the 920 will hold more dry coffee than the 870 (around ~22g vs 18g in the basket) - the 920 uses a standard 58mm basket whereas the 870 uses a slightly smaller 54mm (I believe) - but it means the brew ratios end up ever so slightly different.
Some would say the built in grinder on the 870 is a drawback because if it breaks, the whole machine is in for repair - but I've never heard of a grinder failing on one.
If the main purpose of your coffee machine is to make your own coffee in the morning, or just one coffee at a time, as opposed to 3 or 4 back to back when guests come over, the 870 is easily worth it for the money.
Pros of the 870:
- Much quicker heatup (1min vs 5-10min)
- Notably cheaper than the 920 when on sale
- I find it much less temperamental and fussy than the 920… family and friends regularly give it a whirl and haven't done any damage yet
- Built in grinder means it is noticably smaller on a bench than the 920
- Thermoblock means the steam wand is much slower than a boiler… this might sound like a con but it means you have much more time to focus on the consistency. And we're still only talking 30-40 seconds to get to 65C.
Cons of the 870
- No simultaneous shot/steam means back to back coffees are doable but a pain
- The drip tray is remarkably small (requires emptying every ~6 shots) and the metal clad drip tray front prone to denting
- 54mm basket is not a standard size so no real availability of aftermarket accessories
- The grinder is matched perfectly to the machine, but it will not grind coarse enough for drip/filter if you're looking for a dual purpose grinder
- The "clean me" indicator comes on after every 200 shots. So… If you run hot water through the group head before every shot, you'll be prompted to clean every 100 coffees
Pros of the 920:
- Even 2 years in, every now and again I pull a shot that makes me go "shit that's good"
- PID is remarkably accurate (tested) and an actively heated group head is unheard of in a sub-2.5k machine
- Will pull shot after shot after shot, each consistently as good as the last
- The steam wand has enough force to blow milk out of a jug
- Steam wand heats milk quickly and you can really get some brilliant latte art out of it with practice
- Easily the cheapest and best value dual boiler machine money can buy
- An almost cult like following means there's heaps of reading material and servicing manuals available online
- Standard 58mm portafilter means you can use Pullman tampers and VST baskets!
- When coffee eventually starts to consume your life and become your overriding hobby (I promise… it will) check out Breville part BES058NP… just hours of fun diagnosing shot, tamp, grind and dose with a naked group handle!
Cons of the 920:
- Slow heat up time
- Much larger than you think… to any prospective owners I urge you to measure your bench space… some DIY work was required in our kitchen to weasel it in… however once there it looks the business
- Reliability a mixed bag and I would factor in a reasonably hefty repair bill around the 2 year mark (common failure points include OPV, front pressure gauge, steam boiler) - my first was personally DOA, the second has been replaced under warranty when something internal leaked onto the main board. Machine 3 seems to be going OK.
- It's a bit of a fussy machine… 1 click or 1g up or down in grind can be the difference between an excellent shot and a crap one
I live with an older lady who is less of a coffee enthusiast but still likes a nice coffee - she prefers the 870 over the 920 - in fact she taught herself to use the 870, whereas the 920 is still witchcraft to her.
I like a double shot flat white - from machine being turned on, to coffee ready, machine cleaned and turned off - I can do it in around 5 minutes on the 870, a bit over 10 on the 920 - this includes respective heatup times.
If the drawbacks of the 870 (no simultaneous milk/shot etc) aren't really drawbacks to you, AND if the price is right in the context of the 920 being so cheap, I'd say go for that. Its maybe 10% less machine for a lower price, and is much less fussy doing it. If you entertain regularly, want to explore the idea of coffee as a hobby, or just want a giant status symbol on your bench, for either $699/$799 the 920 is hard to go by.
One word of caution though is that the 920 (both machines really) will only ever be as good as the grinder used with it. If you get the dual boiler, at the very least get a smart grinder, it matches the 920 nicely and gives best-in-pricerange consistency - but the more you can budget for the grinder, the better. I know someone who owns a 920 and uses a pressurised basket and preground coffee - it makes my heart hurt.
Cheers to anyone that had a read - hopefully it helped in the buying decision of someone. All the best :) |
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开心！过了NAATI了！！！ (2006-2-17) tiffanygz 
楼主:hgaox
发表于 2017-6-21 23:26
