I may hang back and hear everyone else rave about how great they are before succumbing to peer pressure and getting one. This is what happened to me on the L4, and I love it.
At a price where the alternative is buying 3 and one-third Infinity Ultra-G's . . . . same colors even . . . . or a third of another L4 . . . . I'll have to say I'm in for a range of zero to one Arc AA's.