Quality Meats, BLT Prime
I've been to both and found the food and atmosphere better at BLT Prime. The design at Quality Meats is very interesting, but I found the place to be life-less and the food while not terrible just was'nt that good. BLT Prime is a solid place, service is good, its got a broad menu for a steak house, fun desserts and its a nice place where you still feel comfortable and relaxed.
And just a general comment BLT Prime I find to be better than BLT Steak in case that debate comes into play for you