I would like to buy my mother a single serve espresso maker and milk steamer for Christmas. She would be using it for "milky" coffee drinks such as lattes and cappuccinos, not straight espresso. I figured on just picking a Nespresso model, but my brother suggested looking at Tassimo (and I'm sure there are other brands) as well. My mom is in her 70s and has limited patience for anything with a steep learning curve, so whatever I choose needs to be simple to use and, equally important, simple to clean. My budget is up to $300. Suggestions?