I wear dress shoes 5 days a week. I try to rotate them to extent the life of the interior of the shoe, letting it dry (on a shoe tree). The soles can be resoled (on a leather sole shoe), the outside you polish its the inside moisture that kills them in the end.
The ones I wear the most are black oxfords with punch cap by a.e. link tan quarter brogues by barker for herring link and some new double monks also for Herring link
For half way between dress and casual, I wear something like a black chelsea boot. I'm wearing out some blundstones, when they die I'll replace them with R.M. Williams link
When I was younger, when not wearing surplus army boots with shorts, I used to wear one stars and the like.
I don't really ever wear sneakers now, but if I was going to I'd probably go with either Stan Smith's or onitsuka tiger's link or something like that.