To be honest, I'm not sure I WOULD get another arranger. I'm certainly not in love with any of the new crop, but keyboards like the Nord Stage, MoXS7 and M3 might do the job... No, they're not arrangers. But they can get close, with work.

But OK, let's say you send me off to a desert island and I HAVE to take an arranger (except the G70)... Right now, I suppose it would have to be the PA2Xpro, as it is the only arranger with a 76, decent styles and sounds, and a nice sampler for when I get bored of its' sounds. Oh, and it's not still in beta Fix everything wrong with the Audya, that might be a good one, but the question was about NOW.
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An arranger is just a tool. What matters is what you build with it..!