For all sorts of practical reasons, I wear pull-ups (Abena Abri-Flex M3) during the day for the most part, unless I'm just staying home, and diapers to bed or for special occasions such as going to a movie. Having the ability to use the potty but still be protected against accidents is the best thing about pull-ups. Since I'm in grad school, I can spend all day there in a pull-up without having to worry about leaking from an over-saturated diaper.
One of the nice things that I like about the Abri-Flex is that they feel bulky between my legs, but are a little more discreet under pants. Better than that, though, is that they actually provide good protection. I could have a full blown (wetting) accident in one without any anxiety about a leak.