Specs are just one aspect..I would look at the features that you need[speakers, midi capabilities, sequencer , mp3 player, cd rom,ect]..Specs are numbers, they may not be as represented in the real world..We must play the instrument, using the features we need..forget the specs, as an example I have played 128 polyphony instruments that have more dropouts than anothers 64 polyphony[because of alocation and patch design].SMF playback,you need to try it, can you search folders or other locations while a sequence is playing[some can not], same with mp3 playback..Are the realtime buttons in good locations, do you have to go thru menus to get where you want to be...These are just a few of the things, we need to touch the board for answers[including the feel and response of the keys]...Specs are not the only thing to make a decision[maybe it is the least important]..