my main objection was too many 'siblings' out there. When you factor in that many donors donate more than once, it just gets to be too much for my comfort level. As I've said here earlier, my ideal donor is a woman who doesn't want kids or would agree to only donate to me. I have actually found both types of donors in my search, but none that are a good fit for me (so far, anyway.)
It's a toss up between doing a guarantee program, or doing a shared program at a clinic with lower stats that is more affordable. I'm leaning towards the guarantee program, but we're not 100% decided yet.