I collect only Colubrids, it can be a truley rewarding experience. Theres a complete different level of respect with Colubrids than there is with Pythons, Boas, etc.
I have Kings, Rats, and a Corn hybrid. Kings and Rats are my favorite and are amazing, i never was a fan of Corns though, their color morphs never struck my interest. Kings have amazing color morphs and are rewarding to breed (if this is what you wish to do, keep in mind you may lose a couple specimens due to their cannabalistic nature). In my opinion though, Kings really are the KINGS of all snakes.
If you want my $.02 go ahead and give Kings a try, i think you'll find them very interesting. As for hogs hopefully someone else will post some info to better help you in that area.
Good luck!