Ive just bought a MK2 180, hence my 120 is for sale in the for sale thread.
The first thing I thought when I drove it was this isnt much quicker than my 120 at lower revs but put your foot down and it flys in comparrison! Ive just done a 200 mile trip in the 180 with a roof rack, 2 mountain bikes on top, 3 people and a load of kit. Speed ranged between 60 and 80 mph and I got roughly 33mpg. I find its fine on the motorway in terms of fuel but a killer round town, especially if you want to hear that "snarl" at its best
The 120 is a better all rounder no doubt but who buys an MG to be an all rounder? Thats what Focus's, Vectras and the like are for