I hate my sit-n-stand, baby trend or something like that. The basket is impossible to get to, the thing doesn't turn well, and the handle bar covers arelways slipping down. Funny thing is, I like my Evenflo double (Take me too! model). I can get to everything, holds the carrier, it turns one handed, has a big basket, is light & fits in my tiny SUV cargo area. No complaints with my Evenflo travel system single either.
I also hate my single jogger by right step (I think). It's just hard to deal with. Doesn't turn well and I'm always afraid of stopping quickly at high speeds. My double jogger is a Schwinn and that thing is a dream.