Hi sara, it depends on what kind of music you would play with it, but all the tritons is like a multi tool.
Iīve made several electronica track on just triton and FM7 (software)
The acoustic sounds is great but iīve heard better (Motif).
But if you see the whole thing from another perspective, the triton technology comes from the older n364\01W (al2\AM optional) so itīs principle the same sound engine as 7 years older korg synthesizers, while synths as motif is based on 2 internal synth engines (pcm sample\fm)
and one optional (Analog modeling)
I sold my triton, and bougt a Motif because of the sound quality.
If you are loking after a boring machine buy triton, if you could afford motif go ahead...
Whatever you do donīt buy the Fantom, itīs basicly the same as Xp 80.
Good luck!