I know you said you aren't a fan of them - but I'd suggest you look into boas a little more, there are some pretty morphs that don't cost too much (hypo) and they are a lot of fun to keep, as they are good display animals and a lot more active and interactive when handled. A BCI, either a male or a female would probably be suitable. They are usually docile, easy to feed, and easy to maintain temps/humidity. The females get larger of course, but you wouldn't be in over your head as most max out around 8-9 feet.