I have only kept kenyans, and have two, so keep that in mind... Mine have been very easy to care for. I keep their hot side at around 94f with ambient temps similar to what you would keep a BP at. I started mine in 10 gallon tanks, but being females, they will eventually need a 20 gallon "long", or similar sized tub.

Both of mine came from good breeders (I would highly recommend look for the kenyan sand boa FB groups if you're looking.. You can get quality animals from good breeders there and good advice). The breeders in both cases had started mine on frozen thawed before I got them so I have had very few issues where feeding is concerned. Some will recommend feeding in a seperate tub and others feed in the enclosure, it's really up to what your boa prefers.

As to temperment and activity level... Both of mine stay hidden in the day and will be seen on surface at night. One of mine even has a penchant for climbing her thermostat cord, or anything else I put in her tank. Because they are buried in the substrate and are ambush predators, you must use caution when removing them for handling or cleaning. I feel around deeply in the substrate and when I find mine, I pull her out gently, but not very slowly. They may "flail" when removed like this.. sortof jerk their body from side to side, but quickly calm down and when held, both of mine will nose around trying to "dig" into clothing, skin, etc. I have only been nipped once, and that was my fault- I was cleaning poo out of the cage at night with her still in there and she "ambushed" my finger. She immediately let go and there was no pain involved. Since then, I've been more careful to remove her when cleaning the cage.

I would say that on the whole, they're docile, have good appetites, and are easy keepers.

If you're wanting a larger snake though... i.e. once close to 3 feet, go with a female or a rosy boa. The male kenyans stay quite small and imo it can be harder to handle a smaller snake.

I've never kept a rosy, but they're "on my list". When I was doing research to choose between the two, I found some threads (I think on here, so do a search... they were old) that said that female rosys can be very agressive / high prey drive to the point that they are difficult to handle as adults. I have no idea if this is common though.

Feel free to pm me if you want to know which breeders I got my KSBs from or have any questions I can help you with.