Personally, blues kind of bug me for gaming. After all while, where I'm using the same keys over and over, the little peepy-clicky sound wears on me. This is completely subjective of course, as has probably been noted on every keyswitch-choice thread here.
Otherwise, my impression is that Leopold is a more solid all-around switch, but it doesn't have the extra "gaming features", which I think means macro keys and a fierce logo or two. And weird angles.
For some reason, the Razer also lacks NKRO, which could be suboptimal for a gaming board.
I have a Leopold brown and a Rosewill blue, though I was very, very close to buying a CM Storm.
Leopold is probably easier to resell if you dislike it. I'd be tempted to go for the CM Storm.