I dont really have a specific model. I was looking at a datasheet for PIC16f84A just now but im not garunteed to be using that.

Having the extra I/O pins sounds like a good idea. I might be doing a few things where that would be helpfull. I like saving on PCB space too. What about with PWM though? I guess that is timing critical and i had to use a 16MHz resonator before. Im not sure that the small PICs i use would have above 4MHz built in.

Whats and "RC" osc?

80MHz :O wow! Heres me never gone above 16MHz before.

What about these 2 pin ones i keep seeing on rapid. Do they work in the same kind of way?