I really don't thinlk a beginner will be hampered by the bugs in the PSR2k, and i DO believe that eventually - the bugs will get fixed. Eventually.
The vocal harmony works great from the arranger chord section, the way it is designed to do, and I don't think you can get THIS much keyboard for THIS much money anywhere else. If you are afraid to make the purchase, that's understandable, but waiting can be tough too. I still think it's a "best buy" even with it's shortcommings.
I will, however keep bugging the company to make good on their advertised promises!