TT TDI confuses me.
If you don't want teh 135i or TTS your choice is:
I personally prefer the TT 2.0T to the 125i. The TT drives really well, especially for a FWD car. I think the 125i engine is a little souless and not very economical compared to the TT's 2.0T FSI.
The TT can easily be remapped to 250bhp if you fancy doing it too.
TT also likely to have better residuals.
123d is a fantastic car, great engine, but you need to decide - petrol or diesel.
Born 30/04/10: MY10 135i M Convertible, AW, Coral Red, Logic 7, Elec Mirrors, Ipod USB, Xenon's, Heated Seats, Wind Deflector, BMS DCI, JB+, BMW Performance: Exhaust, SSK, Handbrake, Pedals and Shadowline grills
Gone! MY08 135i M Coupe, AW, Coral Red, Logic 7, Xenon's, Darkened Glass, Ipod USB