The most fun I ever had in a car was my Mazda RX/4.
This was a very ordinary little Japanese jam tin from the days before Toyota
et al took lessons from Lotus in the art of making cars grip and handle. The Japanese cars of that era were:
Reasonably priced - very reasonably by today's standards
Ultra-reliable - vastly better than the Australian or American or English or even European cars of the day.
Well-equipped - with all the stuff we take for granted these days as standard equipment but you never used to get on a Holden or a BMW unless you ponied up for the top model and slashed in about $5000 extra for the options.
Economical - better than a local car and about equal to the Europeans
Good resale value - much better than anything else.
Boring, boring, boring, boring, boring, boring, boring, boring, boring!
1970s Japaneses cars all had massive understeer and A-Model Ford suspension design. There were three sorts of suspension available: (a) very soft with heaps of roll and crap roadholding. (b) Medium-soft with lots of roll and crap roadholding. (c) Medium-hard to boneshaking with some roll and crap roadholding. Apart from not understanding how to set the spring rates and shock valving and al the rest of it up, many of them suffered from having too little suspension travel.
Now, the Mazda was "good ordinary Japanese" in every way except one: it had that amazing Rotary engine: wind it up with a few revs and you had
masses of power, and without that great lump of heavy metal over the front wheels to mess your front-rear weight distribution up: a lot closer to 50/50 than the same car would have been with a 1970s 3.0 litre 6, say.
Anyway, being young and silly with money, I spent several thousand on it: nothing outrageous, no three-foot wide tyres or anything, just the very best stock or near-stock components I could find, notably:
Goodyear NCT tyres (which were streets ahead of anything else for a while there, with around 10 to 15% more grip than typical "high-performance tyres" until the other companies caught up again a year or two later)
Racing brake pads (I mean
real racing pads, which were not 100% legal for road use as they needed a hell of a stomp even with power assist and didn't become fully effective until they were warmed up - but they still had more stopping power stone cold than stock ones, so WTF? Also, they had lots of nasty asbestos in them. Not legal anymore.
Really good gas shockers. The guy who used to do my car was an ex-Australian Rally Champion: knew his stuff backwards. Doubtless he used to think I was a terrible weenie bitumen whimp, but he did my car up just the same, and it flew.
The engine I left as stock, except for fitting four super-expensive platinum-coated 4-gap spark plugs at about $30
each! (This was the early 1980s, remember: thirty bucks was enough to buy you two concert tickets to see Billy Joel or Frank Zappa. Ouch!) But they worked a treat: better power, and they lasted about five times longer than standard $3.50 plugs. (Rotaries have two plugs per chamber, leading and trailing, and with ordinary sparks the trailing plugs would get gummed up with black goo after a few thousand miles or else - depending on how you set your timing and the mixture - the leading plugs would get burned. Or maybe it was the other way about. I forget.)
Net result: a firm ride with half-decent control, brilliant brakes, masses of silky-smooth power (so long as you remembered to keep the revs up over about 3800 - from there it would keep pulling past the rev warning buzzer at 6800 and the red line at 7000 for as far as you felt brave enough to push it: I had it
way past that sometimes, up to about 10 or 11 thou, and racing people used to take them further still) and bugger-all roadholding.
It still understeered like a pig. Not as much as the equivalent piston-engined model, but too much just the same.
Unless you fed some power in.
That was a wonderful car: you could just dial in whatever amount of power it took to get the back end loosened up to the desired amount. And because it had bugger-all roadholding - fancy tyres and trick shockers notwithstanding - you could do it at a speed that meant an unexpected departure into the scenery would probably be expensive but not fatal.
If you wanted to let the back step out a little but were already going as fast as you dared, then a modicum of left-foot braking did the trick beautifully. The most fun I ever had out of bed. Or possibly in it.