While it has some enjoyable titles, I am personally not a fan of any of the Game Gear games. I feel this collection could've been stronger had it not focused so heavily on them, the Mega collection released on the same consoles is just superior in every way.
And with better ways to access most of this collection through emulation or other releases, this is really just the Sonic the Fighters disc.

My younger self loved this collection. Nowadays you can't walk 5 feet without stumbeling over some Sonic games.