Hell-bent Holsters Combat wallet.
(Sorry about the huge pic, only good one I could find)
Hand made in Texas (Midlothian, 20 minutes from me) out of kydex, which is extremely tough and scratch resistant (RC of 90, higher than most knives). Hell-Bent Holsters started as a holster company, but when their combat wallet came out, things really took off.
Card capacity is as follows:
The first number is the maximum of cards with raised lettering (bank cards), the seconds is the max of cards with out raised lettering (gift cards, membership cards, etc.).
They have three options:
CW 1- Only holds cards. Large, medium, small. 7 different colors. (This is the one I have) RFID blocking layer optional.
CW 2- Hold cards, and has a kydex money clip built in. Same 7 different colors. RFID blocking layer optional.
CW 2.5- Hold cards, and has a REMOVABLE carbon-fiber money clip, which I believe can be used as a stand alone money clip as well. It is only available in carbon-fiber style kydex, and only in large and medium sizes. RFID blocking layer standard. They just released this version about a week ago, and they sold out of the first batch of 100 in under 10 minutes, and they are now on a back order. Highly sought after.
So that is my recommendation, but I may be a bit biased since these guys are hand-making these locally.
(No, I don't work for Hell-Bent. I just really, REALLY like their products.)