Like you Somniac I also previously owned a Scooby and Evo among a few others. I enjoy the odd trackday and pretty much everything interesting I've owned has been on track at some point, plenty of videos on my YouTube channel below.
A few of the best:
The current toy with APR Stage I remap and AP racing/Padgid RS4 pads. We call this our "Scooby for grown ups".
This R26.R was the best track toy I've owned, as fast as the Evo on track and utterly addictive to drive flat out. As the press said at the time it really is the GT3RS for the rest of us.
I'd always been a Scooby man but had the itch to try an Evo, this IX MR FQ360 was one of the best. I found the constant new (and potentially expensive) noises the Evo made after each track outing worrying so didn't keep it long. The acceleration was incredible at the time. In the wet it was a handful and wow cdid the Evo drink fuel, single digits were easy to achieve and sub 4mpg on track makes the RS3's 7mpg seem reasonable.
Honda were giving the last few S2000's away and after the disappointment of the Westfield Sport 2000 below I decided to try one. On track it was superb, revving that Vtec unit to 8K, unburstable reliability too even after a lot of track abuse.
I owned 2 Westfileds in a row and both were a crushing disappointment because they were so unreliable. The Megabird blew it's engine and the Sport 2000 pictured here had a clutch made from chocolate. These cars spent more time being repaired than driven and I much prefer driving!
As we're on ASN I better include the TT quattro Sport too. It was a good car but in all honesty not the greatest I've owned. At 8/10's it was fine but didn't like to really be pushed. The handling became quite snappy at the limit.
Before all those I was a major Scooby fan and loved this STi, here fitted with the Licthfield Type 20 upgrades, AST coilover suspension was superb on wet tracks, back off to the softest setting and enjoy. The DBA Kanagroo paw discs also solved the problem of the standard brakes catching fire!
All have been huge fun to own in their own way but the RS3 is by far the best road car as it can do everything the others offer but with none of the compromise.