I love them thick or slim! I have been with very thick girl but felt her pussy tight and enjoyed it a lot. The issue there was because of my size, we weren't able to do a lot of poses. But this is my problem, not hers, hence why the understanding thick girls need bigger dick.
I have also a different case with a slim girl, I could barely feel anything, needed to pull out and jack off to cum and lick her so she can cum also.
Just my humble opinion, but definitely liked them both!