76 keys rules out the T2 straight away and also the E80 which is only 61 notes.
For midi the G70 or Korg would be better with 76 notes.
Adding samples (WAV) that can be edited the T2 is excellent at this. The Korg also has great quality samples available for it.
As for styles IMO the T2 or new E80 are best, but then again these are only 61 notes m8.
To sum it up if you don't want to wait for any new keyboard release and you need 76 keys then choices are G70 or the Korg if samples are your thing (I'm not sure the G70 can load in samples/WAV's?). You could wait until after Christmas for the new SD1 plus replacement which will be 76 keys and have loads of new features. I honestly think that this machine will kick some butts in the arranger world on it's release and I can't wait to see this one.