I'm newbie for this forum, planning to buy used 320i(08/09) or 520i(05/06). Pleased, any sifu or owners help to advised me in the rite choice.I still put priority for 320 instead of 520 due to the budget, maintainance, F.C, milleage & service warranty.3s has different facelift between 08 & 09. Anymore internally different spec. like engine performance, feature & etc, beside the exterior?I read some forum in here, somebody mentioned about low pressure tyres sensor could caused the tyre replacement problem... is it difficult we DIY incase the tyre puncture? I meant will need send back for reseting or DIY? How the simple job for instruction(DIY reseting)?Is it worth to get '09 new facelift now, those coming soon with F30 the 3s 6th generation in 2012? Just about 1 year later might become E90 outdated soon?I welcome those can give more comments with the e90, especially the onwers with this car.