In my really limited experience, my favourite so far is the RGA321. Mine's the first gen, they now come with actives, so a little disappointed as I was thinking of getting another. =(
Wizard neck, real nice feel (satin finished), frets are very well done, nicely rounded ends, levelled properly. The arch top is comfy and looks gorgeous. Thick maple cap plus mahogany body makes for a very well balanced tone. The mahogany is not as thick as a LP, tho, so it's not too dark sounding. A little on the bright side. Not too heavy, neither.
Bridge is comfy and helps the sustain a lot (easy to change strings, too). Good pickup config: the HH config with the neck humbucker in parallel sounds sweet! Swapped for a SD Jazz and JB combi, very versatile. The stock IBZ neck pickup is also very nice. The nut is very well cut, but I had changed it to a bone nut courtesy of Malcolm (very neat job, I must say!). After Malcolm's setup, she plays even betterest!
In short, the best design Ibanez ever came up with. She's my number one!