those are pretty different, so i'm guessing you aren't completely committed to either. some programs have to rotate out for spine and/or peds, so when researching you might want to take a look at what kind of exposure you'll get. peds is out there, but i've seen a few programs that seem to provide the bare minimum in spine experience. not a big deal for most, but if you think you might want to do it, try to find a program where ¥ou can really explore the field...
that said, agree with above--the best program is the one that takes you.
cheers.
fg