Welcome to the forum (from a fellow newbie to this forum)
The Altezza RS200s dont have 'sports' and 'prestige' levels do they IanF?
Im just aware of the normal RS200s, RS200Zs and RS200Ls.
They are very practical cars, being 4 door makes it so convienent, and huge boot for all your prams (or thumping audio gear :P )
RS200s come with a '3SGE' engine which is about 210bhp stock, so no mods are required to make it run well hehe.
Not sure about UK, but insurance here wasn't bad for me (being 19...)
Its a pick of the gems I tell you :P , I sold a 2002 318ti for a 1998 RS200Z, and have not looked back since :D .
Things to be aware of? The radio lol, and the manual box, its very noisy (with an idle chatter, and a 3000rpm rumble).
Anyways, hope you get one, and welcome to the forums again.
Nick