Check out this thread:
http://allnurses.com/forums/f125/rn-...ne-105380.html
There's feedback there about any programs. Employers aren't really that interested. Both accreditations are good ones. NLN I think is the standard for some grad schools. So if possible I would choose an NLN-approved school.
UoP is very expensive, so I didn't choose them, but I hear it's a good program.