Indeed, The ultimate Genesis/Megadrive collection may have games like Golden Axe and Streets of Rage 2 on the disc, but not having online multiplayer was a let down, hence i have Golden Axe and Streets of Rage 2 for XBLA aswell because my buddies in the outside world don't tend to share my enthusiasm for old skool games.
I still play Streets of Rage 2 online to this very day, i was on it last night and had a blast.
Best 400 MS points i ever spent (both quality and longevity wise)
As for my fave console..................... Sega Megadrive.
Top 3 games.............
1. Streets of Rage 2
2. Sonic and Knuckles
3. Revenge of Shinobi