Hi raymie,
FX6/7/8 have quite a different sound to VA7/76. Some sounds are strongeron the VA series - saxes in particular, but for the most part the FX series will keep you occupied with a great mix of fantastic sounds. Plus of course with the FX you can layer and zone up to 16 simultaneous sounds.
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Roland G-70, FP-4, BK-7m, SonicCell, KC-350 x 2, DS-5 x 2, A300-Pro, Sonar X1 PE, BR1600CD
Yamaha HX-1 System 1, KA-20x2