About plectrums

Would it matter too much what plectrum i use to play certain things?

Example, i find it easier to play songs with just chords using a really thin, floppy pick that makes a clean sound strumming, unlike thick ones which sound slightly rough. But of course it isnt any good for solo's.
Should i just find one pick to play everything with or use more than one, because ive been thinking if it would hurt my ability to play properly if i switch a lot.

That's the best part about picks. They're so cheap that you can experiment to your hearts content while spending very little cash. I bought a pick(I can't remember the brand name) that depending on where you gripped it, changed the stiffness. Up close for heavy, a little further back was medium, and ever further back was thin. Kind of a neat thing but I prefer thin for playing my acoustic, medium for electric clean, and heavy for harder overdrive electric. Play around and see what works best for you.

CC

Different materials sound different. Within a single material, different thicknesses sound different. Within a single material and thickness, different geometries (?) sound different - that is, the shape and the degree to which the edges of the pick are sharp or rounded makes a difference.

They're cheap enough. Buy a bunch, try some out, you'll find some you like.

I have three kinds that I like, but I notice that my preferences are pretty much outside of the mainstream, so I'll keep them to myself.

Just try a variety.

Ring the changes:-)

I use a bit of gaffa tape stuck longways on the boom of the mic stand so I can stick a selection of picks on there and just peel off the one I want. For what its worth, I tend to use heavy (2mm Big Stubby) for rock and choppy rhythm work and a medium (.73 Jim Dunlop Nylon) for the acoustic and srumming stuff.