I've got two 2.5X20 Ultralights with the heavy crosshair. One on a .375 H&H and one on my .307 Win. I have no reason to dislike them. I will be trying their custom shop 3X Big Bore scope before too long.
I also have a VX-II 1-4x20 on my .450 Marlin. It is the only variable I own. Seems to be a good scope, but haven't used it real hard. It did travel well in a scabbard over 50 or so trail miles on this Montana moose hunt in 2010, but I haven't really used it since.