I bought the K150 blender almost a month ago and it works fantastic.
It crushes ice in mere seconds, I couldn't be any happier. It may only have 3 speeds, but they are powerful to get the job done.
The other thing I like, is that it only takes up a small footprint in the kitchen. I had a much larger blender that I replaced this one with, and this one out performed that one crushing ice.
The personal travel cups are great for on the go. My only complaint is that there is no sipping seal, so you have to be mindful about it possibly spilling out. Otherwise it is a great product and I'm very happy I chose it.