I initially had great results with Androgel. Unfortunately, it caused my skin to thicken slightly and to use a highly technical medical term, feel weirdly clammy. In any case, my T numbers were very low, (around 170 ng/dl) despite slathering on more gel than I could stand.
I tried different brands, such as Testim and Axiron, with generally poor results, and some additional skin problems. Those problems were so bad, I went to a dermatologist. He immediately took me off the T products and put me on a 10% compounded creme made by Professional Arts Pharmacy in Baltimore, Maryland. The doc claimed that this particular compounded T creme was extremely effective (he used it himself) and caused no skin problems. He was right, as T levels were steadily repeatable at 700-725 ng/dl and my skin problems disappeared. Also made me horny as hell.
Fast forward some years, and I have no longer been able to procure that compounded creme. Maybe due to new regulations or policies. In any case, I've switched to a 10% creme made locally and T levels dropped to 400-450, even with very liberal use.