as other members here noticed already, if you need/want 76 keys, in this price segment, E60 is probably the only choice.
on the other hand, even if you only need 5 octaves, E50 is one of the few alternatives one have for the price. meaning psr3000, pa50, maybe a second hand t1. but the set of features and functions makes it no1 option, imo.
let alone the styles! the sounds are good to very good, but the styles department really shine! i mentioned in another post, you dont even get to realize you only have 130 styles, because out of that, you can use very well about 125 of them.
zuki -
even if you won t get the 76 keys version anytime soon, i am sure you'll have much fun with your E! waiting for your song!
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Yamaha S770, Studio One 3, EMU 0404USB, ESI, ATH, Dell. And others.