Here are the top ones I'd recommend
Activate Xtreme by Designer Supplements
Stoked by Anabolic Innovations
T-bomb 2 by MHP (one of the better Tribulus based Test Boosters
Supremacy by Neogenix
Reversitol by iForce (probably the best ingredient profile in an Anti Aromatase/Test Booster product)
Novadex Xt by Gaspari Nutrition (This boosts testosterone by Blocking Estrogen through the compound "ATD" which can actually kill your libido if you take too much. This is due to the fact that in high doses it eliminates good and bad estrogens. You need estrogen. So keep the dosages low 2 caps a night is all you need)
Also if you want to try something more herbal, tongkat ali, and stinging nettle root extract are great for boosting free testosterone.
If you are also having trouble with fatigue I recommend you check this out.