Carbolin 19 is a non-steroidal anabolic compound. It was designed to increase lean body mass and decrease fat mass, and as an added benefit, may increase testosterone production to a moderate degree in males.
RED KAT and Alpha Male were designed to increase your own body's testosterone production. Alpha Male is a combination of the active constituents from both RED KAT and TRIBEX. It's the better choice in my opinion.
Carbolin 19 would be the better choice in your case.
Alpha Male would be the better choice in a situation where you may feel that you need an increase in testosterone levels, whether you think they may be declining due to age or other outside factors such as chronic stress.