go for 16" rims. u wudnt go wrong. my reasoning
1) the 206 1.4, even with 14" tyres, the acceleration is quite bad to start off and it is just a 1.4 with 75 hp (plus personally, i feel that 206 with 14" jz doesnt look good, u look @ it from the rear, the width of the tyres just wudnt match the car)
2) slap on a 16", cruise around and drive slowly is better =p looks better too, if ur daring enough, take 17", but go for OZs cos they are light weight rims
3) i took it up genting, went to Ulu Yam runs etc etc, feels more confident around those tight corners.
4) there isnt much difference between a 14" and a 15". difference is only 1", but this is subjected to personal preference. I know alot of owners out there uses 15" so dun shoot me.. jz a preference.
I am using 16" myself... a poser, YES, I have to admit but I just want the car to look better
the only downside is, there's a price to pay for replacing those 16" tyres