First of all when selecting a daytime diaper the most important is fit. If the fit isn't right then you will leak (plus if they fit good you shouldn't really feel like you are wearing a diaper more like wearing underware). I personally prefer the Attends with waistband for daytime use for several reasons. They fit very well and the crotch area has enough room for a quality booster pad. The Attends are thin, and quiet enough that I dont wear anything over them. I am very active and I personally dont wear plastic pants over my diaper simply because it gets to hot.

The most important thing to remember is to constantly check yourself to make sure you are not leaking!

Joey, 

You need to be conscious when you stand up or bend over but many times those of us who have to wear diapers are paranoid.  I can tell you that I never look at my coworkers crotches and I am sure that most don't look at mine or cracks for the matter.  I wear Abena X-plus every day because I am a big wetter and need the protection.  I work in an office environment and need to have my shirt tucked in at all times.  To help I usually put underwear on over the diaper which quites it a little and covers the diaper so hopefully they'll see the waistband of the underwear and not the diaper.