Contrary to what I have written, I do recognize that there will be some major improvements with the PSR 2000 over the PSR 740. 12 watt per channel speakers instead of 6 watt per channel speakers is one of them. 180 styles with a break and 3 intros and 3 endings as opposed to 160 styles with 2 intros and 2 endings is also a significant improvement. There are improvements in the amount of voices. There are improvements in the sequencing features, even though I don't understand why people would want to do sequencing with their keyboard when, with a cheap version of Cakewalk and a computer you can do 100 times more much more easily.
Contrary to what others have posted, I think the PSR 740 is an excellent keyboard for the money. My audiences go crazy over the music I make with this keyboard. What other keyboard in this price range comes with a vocal harmonizer? Sure I wish it had a hard drive, but then many people wouldn't be purchasing the PSR 9000.
My biggest frustration with the PSR 740 is the lack of storage space for styles and the difficulty in loading new styles. I want to have access to more user styles during a performance. If the successor gives me access to less, because I have to delete styles in flash ram in order to load new styles, and if the size of the flash ram is just 700 kilobytes, then I'm best off keeping my PSR 740.
Now if the flash ram is 1 megabyte, then that's fantastic. Problem solved. Or if you can easily replace loaded styles, then that is great too.
I will email the representative of Yamaha, and hopefully, I will get an answer to this vexing question within a few days. If anyone finds out about this question sooner, please post it.
Larry