I like the A1048 that immediately followed this one even better[1]. Sharper keycaps and (imo) a crisper feel, though that could be subjective. Definitely also a crumb tray!
Most keycaps could be interchanged between these keyboards and the truncated one from the original iMac (M2452)[2] which I did on a couple of keyboards, mostly because I liked the way it looked. I only stopped using my 2452 last year when I decided I really, really needed a keyboard with a forward delete key.