Sportif is like the base model... no electric windows or nothing... SR has 25mm springs, TTE spoiler and back box, Speedline wheels. I can't quite remember properly but I think the Solida or GLS? Has electric windows and aircon or something like that. And some have a sun roof. Try to buy one from an old lady with service history and less than 75k miles and it should be fine. Past 100k they start burning oil apparently. I have encountered no problems so far... The mpg is good on them (40-44 mpg) aslong as you don't rag it. I'd suggest having a look at the spark plugs, HT leads, rotor arm, dizzy cap, air filter, all that sort of thing, and replacing anything that's worn out. (Might aswell just do a full service on it if it hasn't had one recently).