it depends what you like. If you like a specific make of car then choose that. A driving fast track day will be an entirely different experience to a experience track day if you see what I mean.
Here's my experience....
Ferrari track day - awful. Limiter on the car, ferrari's are shit.
Porsche track day - porche's generally drive nice
Aston Martin - still a limiter on the car but the cars are way nicer
Formula ford - awesome! No limiter, try and keep up with the fast guy, proper racing cars.
Drift day - OK I guess, very short.
Palmer sport day - very, very expensive but absolutely amazing. Racing nose to tail in an M3 with other guys in M3's was so much fun. Drifting caterham's around a twisty track almost had me sex weeing.
I raced gokarts for a while too. 125cc race. That was fun too but there is so much technique involved. This teaches you how to race,
I'd recommend choosing a car you like and doing that for half a day.