I ditched my bi-fold wallet and upgraded to this one from Bison Made. It's a quality piece of craftsmanship that fits easily into my pocket and holds everything I need (four cards/IDs and a few bills).
My only complaint is that if you happen to drop the wallet, all of your cards fall out. I keep two cards on each side, so to prevent them from slipping, I slide them in opposite directions (one card left, one card right). This trick keeps them in there better, but I'm searching for a better solution.
The take-away: Don't be a clutz and drop your wallet (or practice your quick reflexes), but do get this to carry your necessities.