Your hair looks great from all angles, except the Vertex... the flash does a lot to make thinning more obvious.
Again, JayB, we all feel for you here.
You're not alone in this struggle.
Have you considered anti-anxiety medicine to help reduce the hairloss-related stress/anxiety you're having?
I take Remeron, and it's significantly lowered my stress load.
Also, Propecia is PROVEN to work on the top and crown, exactly where you're experiencing thinning.
Propecia (finasteride) + Rogaine (minoxidil) + Nizoral (ketoconazole)
The Big 3.
Why don't you take the step and get on Propecia?
It works, man.