Martin v. LiftMaster v. Hormann v. ?
I'm looking for a quality garage door opener -- it should be quiet, sturdy (e.g, 1-piece rail), and reliable. My impression, from looking around the web, is that the Martin DC3700, LiftMaster 8550 (or 3585), and Hormann SilentDrive 7500 might fit the bill. Does anyone have experience with any (or all) of these? Am I missing something? Any thoughts and/or suggestions are greatly appreciated.