Nighthawk Customs seem to be gaining popularity. They are an offshoot of former Wilson guys. Not cheap, but the quality/workmanship is top notch, and they don't skimp on parts (Caspian frames & slides, etc.). Haven't shot one yet, but have held/inspected/drooled over a few different variants at Scottsdale Gun Club (their largest dealer), and am now jonesing for one!