I agree with those mentioned (especially Luckycraft). I also like the Rader baits. Really nice cranks. I think Angler's Marine has them, maybe Bass World West too (I would get them at BWW if I had a choice).

Tackle Warehouse also has a great selection. You can find the Specialty Tackle cranks at www.specialtytackle.com or at www.usacproshop.com.