Personaly I like the long beds better. They seem to ride better and pull a trailer more comfortably. All but one truck I ever had have been long beds. As for 4X4 I would rather have to long bed there also, more forgiving in the mud and at speed on the soupy junk. They are easier to make hook at the dragstrip as well. All that said I have a 76 shortbed out here that is waiting on me to decide wether I am going to race it or make it a real nice city truck. 
There is a long bed supercab just a few blocks from me. The guy only wants $350 for it but it has been hit right behind the front tire on the passenger side. Cowl is pushed in rith at the top hinge of the door. If I had a place to work on it I'd get it has the Explorer package and is a 76 just like my swb and lwb reg cab that I have now.