does anybody have the interactive iS35 keyboard that can give me some information about it. I have played the yamaha PSR 740 at Guitar and Keyboard city but they didn't have the iS35 board. Which is the best buy of the two. Thanks for any help.

I currently compared the style capabilities of both and must tell that the Yamaha PSR are toys compared to Korg i-series.
Even the newest psr has not as much features as Korg i30,i40,i35 have. Soundquality of Korg is good. Even the old Korg i3 is better than psr.