Pros: The Keurig wins for this factor since it is MUCH quieter than the Tassimo.
Cons: The fill-level indicators are pretty darn accurate in my experience
We love this brewer. The best benefit is a fresh, just-brewed cup of coffee every time. The k-cups are more expensive than buying bulk coffee but we were throwing away partially brewed pots of coffee every day with our old brewer. Plus, the savings in time not having to clean the carafe and dump the filter of grounds and then cleaning that is well worth it. Also, you can purchase a reusable filter for it if you want to continue to use non-kcup coffee. Believe me, it is still WAY less expensive than what you pay in the popular coffee houses and the coffee is just as good, or better.
It won't accommodate a tall cup but it is simple to brew into a glass measuring cup and then pour that into your tall cup or travel mug.
Helpful tip: We did have a clogging problem at first. The manual doesn't tell you that there is a "top needle" that can get clogged. Just remove the gasket and take a straightened paper clip to unclog it. If you use your own coffee, use a coarser grind to avoid that problem. HOWEVER, we were leaving the k-cup closed up in there and the grounds were getting cold and stayed stuck in the needle. We found that if you remove the k-cup right after brewing, it doesn't get clogged EVER. Have not had it happen since we discovered that. By the way, Keurig's customer/technical service is absolutely top notch! They stand behind their product and more than make up for any inconvenience you may have experienced.
For those of you who are confused about the amount of water to pour in, we just take the cup we are brewing it in, fill it with water and pour it in. We never worry about seeing where the water level is.
Also,The brewer makes excellent coffee.
I am giving it only 3 stars because there is a maintenance procedure you need to do that is NOT in the user manual.
If the brewer does not drip out all the water you put in, there are TWO needles that need to be unclogged using a paper clip. The user manual describes how to do the lower one, the "exit needle". You also need to clean out THREE holes in the UPPER needle, the "entrance needle".
The procedure is shown in a Keurig-produced Youtube video called "How to Clean the Needles and K-Cup® Portion Pack Holder", steps 5 and 6. The video contains a slight error in that it mentions two holes, when there are actually three. A Keurig customer service rep told me specifically to look for three holes.
I think Keurig should put this procedure in its manual because I think every machine sold will eventually clog up, either under warranty or afterwards.