In the interest of full disclosure, I know the guys at Mack Tactics (I'm buddies with Dean Cortez, the creator) and have been promoting them for a while. Dean modeled his video sales page after the best-converting sales videos in the fitness/weight loss niche and those videos are all long. His is the same length.
I like Mack Tactics because the conversions are good, the commissions are high (relatively high for this niche), and the products are very solid, which means low refunds. There are way too many clowns in the "how to pick up girls" niche who are putting out lousy re-hashed products...they might convert, but customers will request refunds...
I promote a bunch of other "pick up"-type / dating products, but this is the one that has worked best for me lately.