Well, as it happens, I just got a pair of Meopta Meopro 8x42 binos today. Long story behind them, and it does not belong here... but here's my two cents' worth:
Right off the bat: I did not compare them side by side with Vortex Vipers (which I was going to buy,) or other more expensive brands (can't justify the $$$.) However, my initial impression of Meopta is very favorable: Solidly built, very clear glass, no "rolling ball" effect in the image. Colors are life-like, and there's plenty eye relief for those of us with eye glasses. Also, the Canadian distributor of Meopta (Canadian Outdoor Distributing) is a solid company that looks after its customers, so I trust Meopta warranty as well.
If possible, check them side by side with Vipers. But my guess is that you would not be disappointed with Meoptas.