hello scott, i played both the RD700 and 300 b4 buying my Promega2 and i owned,briefly, an X8.. they were all at the same shop..the rd700 btw is 88 notes as well..the rd700 felt like it had the same keys as the fantom x8,close to the real thing with good key travel and the sensation you get when striking the real wooden key of an acoustic.roland claim this to be their best ( they're prob all made by Fatar anyway!) the rd300 felt more like a stiffer va76 keyboard(or a very stiff synth action with a small bit of wood feel..hard to describe accurately hope that helps))..there IS a definite difference between the two..if you prefer the weight and slower response of an acoustic piano, then the rd700 would be it...if you like to play fast synth lead lines, prob the 300 would be a better bet..personally i went for the promega because of the keyboard modelling (eg the rhodes is almost impossible to pick from my old stage 73!!) and the keyboard was pretty much the same as the X8...
hope that helps scott

P.S. the midi capabilities of each are exactly the same, and they both carry the 88 note grand piano sample with its various options...although personally, i still reckon the sample on the X8 was just that little bit different to the RD's..slightly "fatter" if that means anything to you..they were all played thru the same set of speakers too..

dennis

peace, out

[This message has been edited by manic2257 (edited 04-29-2005).]