i agree! i would love to have more Tityus but they are hard to come by and are pretty expensive. i am glad to have the P. transvaalicus in my collection. its one of the best looking ones out there IMO.
Wait it reaches the adult stage. I really want to try to find:
T. Paraensis
T. Obscurus
L. Scutilus
but they are nearly impossible to find. Been looking for over a year.