I had chafing issues similar to yours. The Aspide Glamour solved it completely. And as long as I keep my sitz bones on the saddle in the right spot, I don't get any numbness, either.

Couple other things I do to prevent chafing:
I avoid overly padded shorts, which tend to bunch up and provide material for chafing.

I load up on chamois butter; I use a home made mix in a base of Vaseline. Yep, it's a bit messy, but on longer rides totally worth it.