The smith is outstanding at eliminating the flash, and out at night here in Iraq when you dont want Haji to see exactly where your at thats a big plus. As far as recoil and muzzle climb, not a big issue. Work on basic fundamentals of shooting and with plenty of practice your fast rate firing wont be an issue.
The only downside I have experienced is bending one of the four prongs of my smith on the tailgate of my HMMWV, which took a little work to get it back in line.