Love this synth. Would definitely recommend 16 voices, 8 was right away not enough. With multi-voicing of this synth, running two sound and may be a sequencer all at the same time, you just need 16 voices.
Have the synth for couple months now, sound are very soft, what I really like. Could not get really sharp sound until now, if that is what you seek, maybe look for other synth.
All in all synth really worth it. With 16 voices and all abilities would buy it again. (also over Prophet 5 and 6)