I've looked into these a little. Searched here and there but other than 1 or 2 threads it doesn't seem like there's a lot of info on these. I mostly hear VF or Apr is the way to go. I've read (was it) Twinkers? thread but I'm just curious if anyone else has had experience with any of these kits. I don't want to buy 1 kit only to decide later I want more. Let me know if one of these is worth it.