IMO depends .

however when i got my vtis i didnt look ahead enought into mods as the jazz was only out for a couple of months when i got mine.

the body kit is a body kit and i personally like the look of both the vtis and vti and it comes down to personal preference on that.

with the wheels however if you dont plan on getting a new set of rims then i would get the vtis. If you are goin to change the wheels i suggest a vti. Reason being the vtis comes with wider wheels at the back i think from memory and better tyres.

Pete