I own two Thinlines both with Humbuckers my main one is a 78 Fender Custom Thinline with Wide Range pickups ( CuNiFe) and my other one is a Nash TL-72 equiped with two Imperial Lollar pickups which deliver a very similar sound like the original Fender Wide Range (not like the Reissue).
What I like a lot is the resonance of the Thinline guitars they have this bit of acoustic bite that I like a lot. As for the Wide Range humbucker pickups they are fat but still retain some of theTwang that I love in single coil Fender pickups. They go very well with stomboxes and are quite polyvalent I mainly playing blues but in Funk tunes or country like they also do the job quite well
As for the single coils Thinline I had the chance to try out a 1968 fender original and the sound was fantastic but the price was far to high for me (4500euros)
Guitars:
1978 Fender Telecaster Thinline Custom USA, New Nash TL-72 Thinline Telecaster, 1965 Harmony Meteor, H71, 1986 Fender Telecaster Esquire MIJ, New Martin J-41 Special, 1933 National Duolian, 1941, New Eastwood Mandocaster 12 strings
Amps:
Tweed Vibrolux Custom Denis Manlay, 1976 Fender Deluxe Reverb Silverface