Hi sara, it depends on what kind of music you would play with it, but all the tritons is like a multi tool.
I�ve made several electronica track on just triton and FM7 (software)
The acoustic sounds is great but i�ve 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 it�s 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 don�t buy the Fantom, it�s basicly the same as Xp 80.
Good luck!