I've looked at IHP briefly a number of times and the thing that always turns me off it is the fact that it's perhaps _too_ batteries included.

When I read the pricing page on IHP's site, and see something like "Email confirmation" (for authentication) having a price associated with it, it makes me assume that IHP is sufficiently locked down that I couldn't just build that feature myself. Either it's not, and I can do, and I've got the wrong impression, or it is, and I worry that IHP having that much control over my codebase will make other things that it doesn't support much harder than with other frameworks.

I'm all for the business model of well integrated, well supported plugins for the framework, but a closed, tightly controlled development environment that I can't break out of as I feel is necessary isn't something I'd bet a company on.