Since Roger is out of the business now, your best bets off the top of my head are Paul Bos and Texas Knifemakers Supply.
Bos has set the industry standard, production companies and knifemakers both use him. He's kind of pricey though until you get into doing batches. I don't know exact prices, but its more than TKS.
TKS (texas knifemakers) does a good job judging by the couple blades I sent their way. They offer a pretty quick turnaround and I think you can still get most blades done for about $10 a piece with cryo treating.
There are some other service around but I can't remember the names.