I've been on HRT since November of 2000. I started on shots...200mg once a week. Within a short period of time the "boys" shut down all together and my sperm count went to "0" which is cool with my wife and I as we already have three beautiful children.
I then went to androgel for about 4 to 5 months taking three packets a day. I remained sterile, but felt like a glazed donut...so I went back to shots.
Four years later...on the same ole' regimen 200mg every week, 1 mg arimidex MWF....no new kids in the family.
I suppose it depends on us individually as a 200mg shot for me, apparently works, but I have another friend who needed 300mg for the same blood level.
Hope it helps
LDSlifter