Explorer doesn't fit too well in reg cabs, but it'll work. Lil bro has one.
Ranger 'bubble' dome (xcab trucks up to 03). My personal fave. After having an Expo and a Stang, I went back to the stock 'bubble'. Provides the best light. 2nd best option IMO is the stang. Map lights are precise. Not much experience at all with regcabs in regards to the dome light, so I can't really give an opinion other than an Expo doesn't fit too well fit and finish wise.
'01 XLT disguised as a '03 Fx4 Level II.