Brendan, my wife and live in Washington Heights and have for the past 3 years. Prices are generally pretty good up here because the money hasn't really drifted to our parts...
But nothing much in terms of good eats and shops. We're on 157th...but if you go further up in the heights you get more restaurant-age.
Inwood is great. It reminds me of Chicago city neighborhoods. Very family oriented. Lots of art-deco inspired apartments. Also fair prices, but not as good as in the Heights. Nice parks up there for chill'n. The one significant drawback is that Inwood is as far north as you can get and still be in Manhattan. It's the end of the A train and while it is express, it is painfully slow those last few stops. It's going to take you a while to get downtown from Inwood. You might as well pack an overnight bag if you want to visit friends in Brooklyn.
The big up side to both of these neighborhoods though, is very close to the GWB for rocking riding. You'll miss out on the morning PP training sessions, but how about hill repeats up Alpine just 45 minutes from your door?