Oh weird, looks like this got necrobumped? Anyways, scanning through the thread, I didn't see any mention of Little Racers Street. It's pretty neat, good selection of tracks and cars, and it's cheap!
Isometric racers are better than most regular racers imo. Something about it I enjoy (though I do love remote control stuff, so isometric racers probably feel as natural in a weird way.
Mini Motors is a good one I enjoyed.
If you like actual RC racing VRC Pro is a full on RC simulator thats well worth getting into but youre best to use an actual RC radio rather than a controller for that one.
I didn't like Overtop. The controls felt very stiff. Thrash Rally/Rally Chase (which I guess doesn't fit this thread because it's top-down) by the same devs is much better.
I've only played Thrash Rally, Overtop and particularly Neo Drift Out look inspired by The Gaelco World Rally arcade game, anyone know how they compare?
Lots of other games get the gameplay but track creation and being able to tweak most everything about a particular level was great.
You could race moon rovers. Try to race a formula 1 car on jupiter. Huge variety of vehicles with very special attributes, multiple terrain types.
I still haven't seen a single isometric racing game do everything that racing destruction set did. Sure the basic gameplay is there but the huge variety of configurable options to create a one off isometric racing/battle game hasn't been matched.
There was actually an excellent sequel to Power Drive, called Power Drive Rally on the Atari Jaguar. For a 1994 game, the detail in the graphics were amazing. There was snow, fog and rain. Skid marks were left on the tracks. Day and night time driving. The creeks and rivers had motion and the water reflected the sky. Real life licensed rally cars that you could buy and upgrade. Various racing locals from around the world. The control was also uber-tight and spot on. Power Drive Rally is a totally cool game and a hidden gem.