like Rick(but less handsome, of course),i use different picks for different sounds and situations.
I've used everything from felt to metal,according to what i was playng.
For the textural guitar ,since often the effect changes according to the pick dynamics, i find using this one more often:
i also used the Dave control pick, it was nice.
a few times i've used an thin, round eraser to simulate fingerpicking.
I had also the Strum Rose:
i also tried the jellyfish pick and also the Stylus pick, good for practising,a bit unnerving for playng.
I found out that Herdinium pick are essential if you want to reproduce The Edge gritty delay lines, believe it or not(not my fault, a friend of mine is a fan).
Sometimes, i use the round part of the pick to get a different sound,and made for myself a heart shaped one to avoid hurting the inside of index forst joint.
I also had steel finger picks but can't stand them
GB, you can try the pickboy series.