Hi Eddie. You don't want to spend a lot, and it sounds like a lot may be over 2 bills. Get the Rogue, unless the stuff below interests you.
A few things, a lot of the cheap ones have 1-11/16" nut width, that's a bit thin, but if you're a strummer just wanting a taste of reso, no big deal. Most bottleneck players want a wider fretboard, 1-3/4" being the very minimum, but I like wider. If you do fingerpick, you'll want to make sure of the neck width and string spacing, if that is a concern at this point for you.
Spider cones are Dobro, biscuit cones are National, for the most part. Spider cones are like this 'v' with a spider bridge coming out to greet the edges, an inverted cone.
Biscuit cone is like this ^ with the biscuit sitting at the point. Noticeable sound difference between them, but for your situation, no big deal. Spider cone sounds nasal, think country music. Most blues guys like a biscuit, but there is certainly no hard and fast rule.
As to the humbucker, it sort of negates it amplified, but what the heck. I use a humbucker on my National, and like it, it still sounds like a National to me. Nothing's pure.
Here's a thread here on the Rogue. viewtopic.php?f=3&t=8141
If you can push up the bucks a few, check out the Republic. You can do a search for those.