Yes i was planning to use them with PICs. Im using 24MHz at the moment with PIC18Fs (i know 16Fs can only do 20). Im pretty sure 18Fs can handle upto 60MHz or atleast the ones im using can (according to the datasheet). Even 40MHz would be a help tho. Im struggling at the moment cramming all my PWM code and extras into the 6M instructions you can get with a 24MHz resonator. I will also be looking at writing the code in slightly different ways but a better resonator would help a lot.

Ill have a look at digikey. Ive already tried my local places but it seems that nobody really uses over 16MHz. Thanks for your help