What Mario said!

Some Kontakt libraries are sooo intricate and detailed. If you use “normal” drum sounds from keyboards or Soundfonts, you won’t believe your ears when using Abbey Road drums or Analogue Drums. Impact Soundworks’ archtop guitar, Scarbee’s Rhodes, Session Horns, simply unbelievable stuff, the Grandeur piano from native...

Mario has an informed balanced view, very open ended, respect... but I have ditched Realtracks altogether and have no regrets.

I much prefer the flexibility of MIDI and sample libraries over realtracks. The charm of real players is, imo, easily compensated by the quality of the samples and the flexibility of MIDI.

The Akai looks like a professional choice to make: not cheap, but really easy to use and with a good keyboard. On the other hand, I once bought a miditech-keyboard, costs nothing, but the keyboard is -unexpectedly- fabulous.

Biab, Kontakt, Sampletank and lots of nice libraries, from Fluffy audio to Abbey Road drums.
Check out these great contemporary Jazz Styles: www.jazzstylezz.com