I was wondering what PICs people keep on hand and use the most often and why. For example, I have:
PIC16F628A (easy to use, simple projects, adapt 16F84 examples on the web to this easily)
PIC16F877A (will be using my PIC16F887s instead of these going forward, similar to 16F628A in features but more I/O pins for projects requiring it)
PIC12F675 (simple and useful when you only need a few pins)
PIC18F1220 (chose this to move into PIC18s)
PIC18F452 (more I/O pin projects)

Have a bunch of others, (notable PICs might be the 16F88, 16F54) however the above is what I find myself using the most currently. I kind of want to get feedback so that I can figure out what PIC might be nice to take on next based on usefulness. Will give me an idea of what to get when taking advantage of Microchip's sample service which I've never tried before.

12F683
16F88 (628 with ADC and more)
16F886
16F887
18F1320
18F2550
18F4550

Just wish I could find an 8 pin chip with a USART.

Mike.

Well,

PIC16F84A (don't tell anyone - I still have a few of these hanging around, but never use 'em)

PIC16F628 (Got a few tubes of surface mount, on a deal)

PIC16F628A (easy to use, simple projects, adapt 16F84 examples on the web to this easily) I grabbed 25 of them last time...

PIC16F88 (Have a couple, these are great, wish I'd grabbed 25 of these.)
PIC16F877, 877A (Still have a few of these around...)

PIC18F454 (Have a few, and also have an 18F458, which has more program memory)

PIC12F683 This is a 'sweet-heart' of a little chip... grabbed 25 last time...

PIC10F202 I wanted surface mount parts, but they sent DIPs. the SMT part is like a spec of dust, with 6 pins on it!

PIC18F1320 - good small 18F chip

PIC18F2620 - like above, but 28pin skinny dip more resources

PIC18F2250 and PIC18F4550 for USB, of course

PIC18F8720 18F8722 I have a few of these HUGE things with 2 USARTs, 128k of program memory and an external memory bus... don't want to waste them on small projects

Have a few dsPICs but haven't really had time to put them through the paces...

Microchip also has some very interesting peripherals I'd love to have around to play with...

16F88 and 16F887, but I'm still a noob!

16HV616 'no voltage regulator required
16f648a 'small pin out with a usart
16f88 'the do it all chip
18f4620 'has MSSP, will never run out of variables or room.

18F4431 'because someday will use the 4 pwm and dual h-bridge feature. A motor controller so to speak, and all the Pic peripherals rolled up into one!

18F1320 - A little more memory than the 1220
18F4520 - Lots of pins and memory
16F627-SO - got a couple of hundred of these so use them for disposable projects
18F2320 - Fairly small but with a few more IO than the 1320

All the above 18f series I use with a custom bootloader so they only really go near the programmer once when they first hit the workshop