« Last post by Nexus on Today at 08:00:39 AM »
Advance 2 had the evil SP Rings, which you had to collect in one go. Colors had Red Star Rings that you could collect at any time (and often couldn't even get on first-time runs of stages). The thing is that Colors' Red Rings were entirely optional and only worked towards getting you the Super Sonic reward that was never necessary, though stage tweaks to accommodate were neat. If you wanted the true ending of Advance 2, you had to get those damnable SP Rings and complete the crappy yet pathetically easy special stages.
If you were going out of your way to be pretty completionist for Red Rings in Colors without just getting them more passively on spare time, I can see why they'd be pretty souring though. And that's not getting into how sadistically dumb 100%'ing the Red Rings were for Lost World.