I love my 11.5" CQB. I have a Colt 18", a Colt 16", two Larue 16"s, a Larue 14.5" pinned and welded, the KAC 11.5", and a 9.5" SR30. The 11.5" is far and away my favorite AR. It's well balanced and is very maneuverable. It's a light, smooth shooter and fits me really well, and since getting it a couple years ago I haven't touched the Larues and only rarely take out the Colts. I still shoot the suppressed SR30 but actually like the unsuppressed 11.5" CQB more. The 9.5" SR30 feels too scrunchy to me but the 11.5" is perfect. I think you can't go wrong with the 11.5".