Something to note, many companies will see PIC experience as nearly useless, as PICs are often seen as hobby-only devices (I'm speaking from experience here). Sure, it'll help to demonstrate that you have experience with embedded systems, programming, etc, but experience with ARM is much more valuable and it looks better on a resume.
You see an awful lot of PIC's in commercial equipment, probably more than any other individual manufacturer.
If you want huge power, massive memory etc. then you could use an ARM (or a high end PIC for that matter), but if you want a simple cheap processor then PIC's fit the bill nicely.