Chip,
I have not used any gels, but the whole idea of spreading a large amount of goo on me everyday for the rest of my life is not appealing.
Not to mention the brand name's price...rip off artists.
I have heard of compounding pharmacies making custom gels that have %10 test, so essentially they have 10 times the concentration, and only a little dab has to go on the skin. The cost is also waaay cheaper, the pharmacist told me it would be about $40 a month.
Since my wife is sensitive to chemicals in general, I decided to have the shots. it was one of the better decisions I have made.
I think its important to realize that drugs rarely get pulled off the market for being useless, that is how they become over the counter. No one dies from it, and before you know it, a useless, overprice version is available in longs drugs