Agree, still using my original Bushnell. There are a lot of good ones out there now tho, so you can really take your pick. Vortex makes a good one for about $80, and has a great warranty. Definitely try in the store with a scope!! The tightness and smoothness is key, especially with all the newer high powered scopes. I like the old one because it opens so wide, and I can clamp it on many things, besides just the window. Also, some have gone to the new 3/8"-16 sizing, and no longer offer 1/4"-20 option.
Just got the better vortex one after a screw worked loose and broke my window cranking it on first day out..... was a leupold i think. Just used the new Vortex on a Wy antelope hunt it worked great, nice and smooth also. Held a 20/60x Zeiss firm driving down roads at 20/25 mph with the scope on it. Yes i know this is not a good idea. I believe there are two models one is $50 and one is like $80. Get the better one.