I have Cooper Cobras on mine, but I've only ever driven in clear/dry conditions. I've heard they suck in wet conditions, but the BFGs I was after had been discontinued at the time, so that's what I went with. I like the look, but if they suck that bad in wet conditions, I'd be inclined to recommend the BFGs.
Oh yeah - the white letters are already starting to fade to brown, after just sitting in my garage the past 2 years... and so far, I haven't been able to simply clean them with shots of Bleache-White, Simple Green, or Purple Stuff Citrus. Starting to piss me off.
But yeah - they do look cool.