Ok, is taking me a bit to procure the suggested cars, but after trying a few (only minimum upgrades as required, no tunning):
Stratos: a lot of fun, wish it had more power. Slapped all non permanent upgrades. I think with some suspension/gear tunning it will be great.
Autozam: cool find! Had to do all the upgrades but was able to powerslide it in trial mountain, takes forever to go fast though
Catheram: a favourite of mine so I can't believe I am saying this.... far too planted for this comparison
GT350R: very close to what I am looking for. Only put an ECU and intake upgrades though. I think this can be upgraded/tuned to be amazing
MR-S V Edition: also quite good, would love it if it had more power. Maybe tuned I can get it to break loose a bit more.
Tommy Kaira ZZ-S: I had huge expectations, and as it usually happens I was a bit disappointed. Didn't feel natural oversteer and didn't get as much sideways action. This has to be a tunnig opportunity though.
One car that went immediately to the top of my list to compete with the Spirits and VX220s:
the AC 427. Completely stock is awesome. Slapped RS, an ECU and a racing filter and it was smoke from start to finish at the Trial Mountain seasonal, while beating the rest of the cars by a mile. I love it.
Wondering what people think about the BMW 120d. With all the torque it might be quite loose. Haven't found one though.