In terms of luthier made guitars (something I should add I'm no expert in, having never been able to afford one!) I have been impressed by guitars made by the following luthiers when I've played them at trade shows and/or in the Ivor Mairants shop:

https://www.elysianacoustics.com/guitar-models

http://www.acoustic-guitars.com/EN/steel-string-flat-top-guitars.php