Rattling cup warmer tray. Water pools on the drip tray and constantly needs to be wiped off.
Hands down, this is the finest machine I have yet to own. I don't really know how a machine can be engineered much better. Even though I've only owned mine for around 4 months I don't have any reason to doubt that this machine will provide years and years of pleasure down the road. Seems as though most of the bugs that were common with the older models have been ironed out by La Marzocco. One of the features I like the best about the machine is the paddle - it makes you feel more involved in the shot pulling process, even though it's merits are a bit debatable. This gives you the option of pre-infuse time, or no pre-infuse at all. I must admit that I'm still in the learning process with this, so I can't conclude how much benefit it offers. Entering the program mode takes a bit of getting used to, luckily there are shortcuts to adjust the brew and steam boilers which make it very fast and easy. The machine can be operated in either regular mode, where both boilers heat simultaneous, or in economy mode where the boilers heat independently - this help conserve energy if you mainly drink espresso. I run mine plumbed in, which is the only way to utilize the pre-infusion. Running it off the tank will not allow it enought pressure to pre-infuse correctly. It's rotary pump is very smooth and quiet, and quite easy to adjust by just removing the side panel. For milk drinks, the steaming is very easy. I opted to have my wand switched for the non-insulated one based upon feedback from other users. Do to it's length it does require a bit more of a purge than most other ones to get all the condensation out, but after that, perfect microfroth is a breeze. The hot water wand needs a bit of a purge as well, and the adjustment knob is a bit archaic, but functional. As far as the aesthics go, it is unique and may not appeal to everyone, but I really like it. And as far as the taste of the shots, they are phenominal, but of course it cannot do all the work for you. If you are just starting out I would highly recommend not going with this machine. Proper barista skills are needed to get the most out of this machine. I would very highly recommend it to those that are ready to take the ultimate step up in home machines.
Chris coffee was once again an absolute pleasure to deal with. I've dealt with them for over ten years and they are the absolute best in the business.