Based on what I have heard, the "wobble" is seen mostly in pure spiders so if that is something concerning you then you might look into a combo...like spinner, bumble bee, lesser bee, etc... . On another note, a breeder I am purchasing a group from said that he acquired a spider years ago that was the only in one in the clutch to have a wobble, he held that individual back thinking he would die rather early; however, the animal ended up living over 10 years and siring quite a few clutches...so it might not be the end of the world if you accidentally buy a "wobbler". Other species to consider are of course bloods and carpets as their care is similar to Python regius ​.