I just recently bought a 1996 Toyota celica SS3, It is a GREAT car to drive! (I do anywhere from 600-1,000 km's per week!) It is economical and should have more than enough up'n'go for the average person.
I did some research before buying and here's what I discovered in general:
SS1-Economical runabout, 3s-fe engine, and typical suspension (for celicas) setup
SS2-More powerful 3s-ge engine, but nothing terribly special about it
SS3-Same 3s-ge engine as the SS2, but with super strut suspension
SS3-Some models from 1998 onwards came with the BEAMS engine-AKA SS4
As for insurance...the celica was cheaper to insure than the curren, seeing as the majority of people with celicas are sensible (currens have a higher risk factor).
However, if you like the idea of more features, ie. electronically adjustable lumber support, high adjustment etc, look for an older model celica such as a GT-R (my mum has a GT-R with all those options but for some reason toyota removed them from my model

)
Aside from all that, good luck with your purchase and enjoy
