I have kept the Adder in my garage for ages. It's never been chrome but is now gold as a tribute to the most hated and loved car of GTAO in my opinion. It's heavy, takes a beating, great to slide and a pleasure to race about town. Plus it's very expensive to blow up. It has to be my all time favorite and I've tried a lot of cars. I have 2 at the moment which I'm using for drifting about and they are the sentinel conv and surprisingly the Warrener. Both can be slow on the get go bet out of the 2 the Warrener is small and because of the lack of speed can be chucked into alleys and tight spots where super cars crash out. It can be chucked about and has it, a really fun little car.
In fantastic shiny sh*te brown (It replaces a scalextric MK1 escort I used to have!) It's a good starter car. As said, the Comet and Futo are the ones for being absolute asshats, I have never got to master the Futo as it's just bonkers being in a chase with it... and in the rain expect many dents on both cars. Here's my old Comet, long since gone, but I don't miss it.
As for the Enus, heavy wallowy car which can be handled but there is better out there. I have had a few, just because they are a lump and I like lumpy motors but as I said, the Adder fits that slot well. The Sultan RS is also a great starter car with a bit of poke and quick revs it's hard to loose on corners, even in the rain but then super cars will get to you in a straight line before you have time to plan an attack. Also another good car to sling through the dirt is the Stinger GT..
I covered many miles around the island without a major crash in all weathers to get it that dirty and enjoyed it all.
So in summary, I've had the most success with the Adder for this game, weighing in all areas of play you may come into contact with. In my opinion of course.