Keep the machine clean. The F7 does a self-cleaning of the milk and coffee system every time you brew. But remember to stay on top of regular maintenance for the best quality. The machine makes that easy by telling you how and when to do the maintenance. It’s not hard, just drop a tablet of cleaner (from Amazon) in the water tank and you’re ready to go in 15 minutes.
Some machines can be quite slow to work their way through programmes, but Jura have put a lot of thought into minimising these delays. The water heating tends to be the cause of the waits, so the F8’s solution is to heat it as it passes through the internal pipes of the machine. The technical detail is a bit beyond us, but it seems to work well. If you want to know more and like the geeky detail, give ‘Jura Thermoblock’ a Google!
On the downside, the bean storage is temperamental, after filling sometimes the beans won't feed into the grinder requiring a prod to continue and despite using a drier roast, not all beans get fed into the grinder when it is "empty." The final minor irritation is that the control button requires multiple rotational clicks before it functions.” James U., Amazon Customer
Whether you like it regular, or ristretto, or long, or Americano, the espresso needs to be smooth. There is some slight bitterness, but it should be very faint. The taste should remind of caramel. If you don’t have any idea of the taste, just go to a good coffee shop and order one. Go for a few days, and try to explore different baristas, and different times of the day. This will give you a great idea. If you don’t like it, and you know the coffee shop is a good one, give up, this is not for you. Some people just don’t like espresso. My wife, for instance, will only accept one if there is no other coffee around. At the end of the day, you have to like it, and you should make it your own.