I think I would trust the Crowdtilt version more for some reason. A lot of these crowdfunding plugin providers seem "shady" and I guess I trust a YC-backed company more in this case (not sure why)...
We've been doing this for 2+ years, built the platform that Chris Roberts used to raise 13+ million for Star Citizen, and have a few additional case stories on our blog: http://ignitiondeck.com/id/blog
We believe that self-hosted crowdfunding is the future, are aware of the concerns with self-hosted cf, and are working hard to address them.
The only reason we're here is because we wanted to raise money in a way that didn't require a KS application, and we funded the plugin with itself. Believe me when I say that we are heavily invested in the success of DIY crowdfunding.
I was just trying to point out that in my past searches for WP crowdfunding solutions I came across a fair number of "questionable" looking plugins from people seemingly looking just to capitalize on a trend.
You're absolutely right that there are a lot of people jumping in for other than noble reasons. When we first started, there weren't any other WordPress plugins doing what we're doing, and now it seems like there is a new one every day.
The downside to this is that it hurts consumers and builds resentment and distrust, but it's my hope that eventually, the buzz will wear off and the field will settle.