Hi
Elite's Fluid trainers are great. It Takes off a lot of stress not to have to worry about your balance like in a roller, plus not to worry about level-difficulty adjustments. Just choose a gear you can spin for 30 to 40 minutes and set your favourite TV or Radio program
of course you can even operate the remote control while riding !
http://www.amazon.com/Elite-Fluid-Alu-Trainer-Yellow/dp/B000BOA7OE
Regards
P.S. You can shift gears just like you do when road riding (making your workout easier or harder)