I know you said that you dont want one that climbs but a TRUE JUNGLE CARPET PYTHON they get decently big not as big as a BOA but they are beautiful snakes a bit nippy as babies but after handling a few times great pets.

Another snake i have heard to be pretty nice and docile snake is the ANACONDA but not the green one they kid to big unless you are looking for that. But im talking about the YELLOW ANACONDA they a really beautiful and neat to look at. People say Anacondas are mean but they arnt i have 6 friends all have yellow and green anacondas and not one has taken a bit. You know if you get bit you had to be doing something the snake didnt want you doing

Another snake if you want big big of course are your retics and burmese but those in my opioion arnt really nice to look at i mean you want a little style and coloring. So defiantly like everyone else said a beautiful sunglow or hypo boa they are defiantly pretty get a good size and obviously are docile when held and played with.

Also think about the madagascar ground boa those are pretty exotic and cool