Nice to hear of the variety of trainers that people use!
I use a Cateye.. it measures watts,speed, can also measure percentage of climbing, and have used it for 13 years!! It has been very durable, and like someone else said, has been moved around quite a bit.
Minoura and CAteye are great trainers as well.. Minoura is a bit less expensive and offers several models. Cycleops is also a grea trainer, but a bit more money... depends on what you want... wind, fluid, magnetic?? All three companies stand behond their products very well... another thing to think about over time...