I always loved NHP… unfortunately, it hasn’t seen development in six months and the bugs and feature requests have been piling up. As a result, I got tired of watching problems go unsolved, forked NHP, and released my own framework which resolves most of the issues people had with NHP and adds a few features of my own! If you want to take a look at my continuation of NHP, check out https://github.com/ghost1227/Redux-Framework/
And now NHP has merged with ReduxFramework 3.0. Lee Mason is now one of the core devs. http://reduxframework.com/
You should really at least give it a try. Grab the plugin here: http://wordpress.org/plugins/redux-framework/
Even if you don’t plan to switch, please give us your insight. I think you’ll be shocked.