My experience has shown me that the psr2000 is in a class by itself. Unfortunaly, it is also made like a toy,has virtually NO upgrade support, and is already obsolete(by Yamaha standards) and therefore, cannot be directly compared to similar offerings by other manufacturers.
For about the same money:
Korg PA60 - equal sounds & styles, not as musical in fills, no mic input.
Ketron XD9 - a little more $ - similar in most ways PLUS it has a hard drive and a better harmonizer
Gem - nothing compares to Gem arrangers. IMO, everything is better(not trying to be mean)
Roland - still asleep at the wheel. Nothing worth a $1000 at this time. The cheap stuff won't cut it, and the VA series is much pricier.

If your budget is $1000US .... the psr2000 will give you the most features, but the construction and longevity is in question. It's definatly a home oriented keyboard, and although it sounds very good ..... it's NOT made very well. At least, not up to the rigors of Pro usage. Baby it, and it might last for you, but mine was giving up in it's infancy. The keys and buttons are horrible.