I've got a spuhr 34mm one piece mount, they're not cheap but they are very very well made. I've had a third eye unimount and it is really is a massive step up from one of those.
I believe they do do a quick release clamp version, depending on what you're after it might suit.
Mine is a low one, but they do them in all sorts of different heights and has attachments for pretty much anything you can think of (ACI, red dot, thermal etc etc).