I just bought a Speedy 25 off eBay a month and a half ago, perfect condition, love it to death. But I think it's too small.... I like it, and it's nice as it holds it's shape well for going out, and I feel like maybe the 30 seems more casual? Or at least that's how I'm thinking of it. I may buy a 30... but I feel weird buying a larger size of the same bag, you know? Just curious, who uses both a speedy 25 AND 30 regularly? I know it's not unusual, but I could never part with my 25 to get a 30... and I do want a 30 pretty soon probably.