I agree with Bluezplayer... One good board for that price range would be the PSR-1000.. It has better voice quality than the PSR-550, way better sequencing for both songs and patterns, very nice screen, better speakers (with tweeters that actually work!).. Overall it's a good buy for the money.. The PSR-550 falls in the $469-$500 category.. The PSR-2000 is above that in price and features, but well worth it.. If I had the $800 I would by the PSR-1000.. Now like Bluezplayer said there is also the PSR-740... This keyboard is better in several areas than the PSR-1000 and can be bought for less... However, there are a few things that differ from them.. The PSR-1000 has way better sequencing, it has voice editing, and a better screen. The PSR-740 will give you drawbars, modulation wheel, vocal harmony, and a few other things.. Keep in mind that the PSR-740 is the model prior to the PSR-2000... So it's features will match more closely to it.. The PSR-1000 is the upgrade from the PSR-640... You can get the PSR-740 for like $699 now, which is a steal for what it does.. Again remember that the 740 doesn't have the sequencing and the voice editing of the the PSR-1000 and PSR-2000

Squeak