I A/B'd my ARC LS 2B Mk II against the LS 16 and the LS 2 smoked it, especially when you consider the price. The 16 sounded dead, gain was real bad. If you notice there are alot of used 16's out there. I listened to the "22' a couple of times and still am amazed with the LS 2B. More money and newer doesnt mean better!
Good Luck!