You'll get lots of varying opinion, just make sure you're comparing apples to apples. You have VX-I's with Roman numerals which were replaced with better VX-1's with arabic numbers.
And finally the VX-1's made since 2012 are much improved, and are essentially a pre-2012 VX-2. Folks using older scopes may have some complaints, but I have none with current production VX-1's.