hey there Holden,
I'll dispense what very little knowledge I can, although I'm sure it will be followed up by someone more knowledgeable than I eventually....*l*
I've placed a couple of orders with PVK, and they've been truly excellent to me, and they seem to have a terrrific reputation around here. If you'd like to see for yerself go over to the "Good, Bad, Ugly" and do a search for PVK, I doubt you'll find anything negative. As I recall, when it comes to auto's what it boils down to, is that it's YOUR responsibility to know the laws in your area. By placing an order from them for an auto knife, you are confirming that you know the laws in your area, and if you do something stupid it's you a$$ and not PVK's (bit of a paraphrase)
As far as the ATKO 10 goes....ah, it's awight. I find them to be pretty inferior to the Daltons and the SWATs, which are usually found in the same approximate price range your looking at. (sometimes less) The Paragon has never felt quite as durable, and doesn't have as much "kick" as the others. I also don't think it has as tight of tolerances or even as nicely ground of a blade. I know when you're a newbie (like me) there's alot of people that will tell you "for a few dollars more you can get ______knife instead of that one and it's alot better" until you find yerself goin' from a $40 Spyderco up to a $325+ CRK Sebenza, but in this regard you REALLY do get alot more bang for yer buck for the same price, or sometimes $50 more. Good luck to ya'!