Defiance anTi is pretty hot right now. Also, BAT Vampire appeals to me as well.
I'm starting to warm up to the idea of a full custom. To me it appears Kelbly offers the best value, and from there, sky's the limit.
Until now it's been factory rifles upgraded one piece at a time, but I'm now getting to the point where I have discovered and grounded my personal preferences in experience.
My opinion is, if I don't know what features I want in a custom action, I have no business specifying one. There are certainly no shortage of options in the field, however. A bit dizzying.