u did a gud comparison....bt a few corrections,firstly city got front 2 speakers only but they got a better sound quality than Rollas speakers,secondly,r u sure u want to say that City is underpowered as compared to Rolla, cuz this isnt the case,city takes the lead all the way,btw city 0-100km/h = 11 secs & Gli/.Xli 0-100 = 13 secs,rest i agree with u,Cheers