A beautiful stallion can end up being a knock out gelding or even just a nice intact purchase! Honestly the only thing that would stop me from purchasing a stud/colt is if I didn't have the experience or I did not have the proper set up to house one.
There is a stallion here who has multiples personalities -- just depends on who is at the other end of his lead. Sometimes he is a gelding, sometimes he is a STUD.
If you've got the know how, and you find the right horse.. his or her gender won't even be an issue. :)