I have used both gel and patches. Patches are far superior as my breasts are constantly achy and sore (and growing). Not so much with gel. Nearly 90% of my changes have been breast growth and after 24 months I have developed nice full C-cups (started flat). As stated before, I wish my changes would have spread out evenly (face, hips, etc... not just breasts). The boob fairy likes me very much apparently. I wish my breast growth would end now and let HRT do other things.
I have learned that after my shower I will use a cotton ball to apply rubbing alcohol over the area and allow to dry. Alcohol makes the skin very dry. Then apply the patch. Stays on very nicely...