Both can be problems.
I breed both and my favorite is the rat snakes. Again, though, I don't have an texas rats.....I am working with everglades, SC pure black, black rats, and leucistic black rats (supposedly true black rats from Joliff lines). I LOVE my black rats and glades...they are great. I also don't have a problem with my ball pythons. I only have a colony of 1.4 adults and then I'm raising up 4 baby balls from last year. I can tell you one thing...this time of year watch out for baby ball pythons because this is when the african shipments come in and they are all CR and many of them will never eat. Sure, they will be cheap and look cute but I'd watch out buying one. Personally, if I was to buy a ball python this time of year I'd find a breeder that had a 50% het something male or plain normal that was nice and cheap but CB and established eating. With the ball pythons, you get what you pay for....cheap means more headaches. Granted this is not the entire case, but I see it a lot. I used to wholesale ball pythons and would get 50 at a time. Some fed, some didn't and some died. My conscience got to me I sell almost entirely CB everything now. Just do not like seeing sick WC animals anymore....just not worth it for my sake or the animal.