I'm a texture fanatic. I love it all.
As far as sizes, it depends. Sometimes I just want something small. If it's girthy, it has to be silicone. If it's wavy, I like it to be made of glass. For silicone I don't like a ton of texture cuz it seems to be more draggy for me, but I love ribbing on silicone, kinda like the Purr from Tantus.