The iDrive has received some pretty bad reviews in the past. My brother had one, and honestly speaking, I concur with his opinion of it: bad. Totally unreliable for him, though YMMV. I thought the design was sub-par, though of course I love the idea of a torsion bar mounted opener.

I installed a LiftMaster Jackmaster in my current house. http://www.liftmaster.com/lmcv2/pages/productmodeldetail.aspx?modelId=436

Solid and reliable. All the accessories are the same as those of the parent company, and leading opener manufacturer, Chamberlain.