I have the Keurig at home and the Tassimo at work.

I prefer the Keurig.

The Tassimo is super slow to make coffee. I've tried different flavors and i don't particularly enjoy.
I'vre tried the latte and when i put the milk disk even before i press start, milk is pouring out.
The Nabob Colombian taste really bad
and there isn't a bunch of variety.

I enjoy my coffee strong so I find the Tassimo is a little weak for my taste however the speed at which I can get to my coffee makes up for it. I plan to get one for my office too.

I had a tassimo for nearly a year and loved it. The tea discs were fantastic as were some of the coffee flavors. If you are a fan of strong coffee there are more options for you.
My problem was with the customer service at Tassimo, after almost a year my machine stopped working and the 365day warranty was not honored.
After being out all that money for a coffee machine I decided against getting another one and switched brands.
That being said while the machine was working it was my favorite appliance.

I never would have purchased a Tassimo on my own as I thought it was an overpriced coffee maker. I received one as a birthday gift and I'm so happy it's a part of my kitchen, now!

I'm the only coffee drinker in my household and so, I used to either make a small batch of coffee and still have to pour some out, or spend my money at a coffee shop so I could have my one cup. With the Tassimo, it's easy for me to brew up my regular morning coffee, without wasting any leftover brew. My fiance can have a hot chocolate or cappuccino, and dinner guests can enjoy a wide variety of hot drinks without me having to use up a coffee maker, a teapot and a kettle.

My only complaint is that there seems to be less variety of T-discs than there are for comparable machines, like the Keurig. I'd like to try more options!

I would say that they need to get more flavors to catch up to thte keurig, there are very few choices for those who dont drink coffee, the hot chocolate only makes 1/2 a cup, so i run it longer to fill it up, but it is super handy for on the go mornings!