HCG IM or SQ ?

Who uses HCG intra-muscular and Who uses HCG Subcutaneous

OK, thought I run this back up for one more pass.

So far 3 votes for IM and none for Subcutaneous. I was of the understanding that either method worked equally well. If that assumption is true it seems to me that sub-q would be less obtrusive.

Thanks for any replies.