Thanks for your thoughts, here's an update on the search:
Upon a bit more digging, it looks like Washburn has been having some QC issues, so probably scratching it off the potentials. I did play a bunch of Loars, S and P's, Takamines, including the New Yorker. The Loars were okay, a bit of the Gibson dirt blues thud, the S and P's varied from so-so to okay but overpriced. I actually had great hopes for the Takamine, but it had a very dead tone. Eastman makes a quality instrument, but as far as I know does not have a slothead in the stable.
Martin's original New Yorker was, of course, a slot head. I had one, a 21 Series, and I adored her. Being young and stupid, I sold it along with other lovely guitars, to go travel around the world for a year. The 21's are now quite desirable.
12 fret designs, especially the current crop of pre-war repros, can be quite magic, balanced in size and tone. A 12 fretter is easy to play, has a looser feel, almost like a classic guitar, and often a very sweet voice that can be intimate or surprisingly loud, like that cute petite girl at the cocktail party. If you have not played a super quality 12 fret slot like a Taylor, Martin or Santa Cruz, then you are in for treat. There is a reason the premium makers such as Collings and the rest also produce slots. They are way cool.
Like everyone, I like a bargain, and I love being surprised when a manufacturer over delivers. My heart wants a Martin 00028VS, but I actually need something less precious for beach gatherings here in Santa Barbara, or campouts on friends' ranches. If a lesser guitar catches a buckle or two, then so be it.
You mention that you prefer a thinner neck. Recording King has a cute little single 0 with a 1 and 3/4 that plays very nice, with a solid top. Or check the 000's, RO-10, solid hog and spruce, or the RO-310, solid hog and addirondack. The 310 gets great reviews, and is probably the steal of a deal. Lastly, the little Alvarez AP710SB or AP70 is nice for no money, has some Gibson woodiness to it, perfect for blues and singing, in a 00 package and 1 and 3/4 fast neck.
The RK necks feel good to me, nice and fast. The slots are 1 and 13/16, but the V neck allows excellent fretting. Unless your hands are super small, you may be surprised what Martin figured out in 1902 about necks. They were "parlour" guitars, often played by ladies while singing at gatherings. Let me know what you discover!
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