I've not been terribly impressed with my BLS straps. The quality doesn't seem great - they are showing a lot of wear after one season. The material also is incredibly soft, so they don't sit up on their own well, meaning I have to completely unloop them, clip in, then loop the strap and velcro it. It's not just a matter of tightening them. (This is one of the main reasons I kind of stopped using them.)
Can't speak to G-Race.
Also, I'm currently out of town, but if you want to see picks of my magnet set up, I'll get some this weekend. It's a cheaper solution than the Cruz option, and it doesn't require tools to remove, so if you aren't running straps, you still have both sides of the pedal.