I don't mind the Sonic games, but I wouldn't have been too fussed if they'd just stopped after Sonic 2.
I quite enjoyed playing Sonic 1 and 2 on the gamecube re-release. Sonic 1 on the Master system was really good too, one of the few games my young self completed properly (all chaos emeralds). Sonic 2 was a bit hard for me, I hated that stupid hang glider section.
Regarding the speed vs methodical approach, it would've been nice if there was a bit more of a blend, particularly in the later levels, I didn't mind going a bit slow where required but the later levels were a bit of a drag, could have done with a bit more chance to bomb around between fiddly bits. The casino zone was fun though, the crazy pinball felt a little uncontrollable at times, but was still enjoyable.