Are there any Thailand travel guides/sources kind of written in the style of Rick Steves?

Answer 1

Try this web site. It is refered to as Stickmans guide to Thailand and has submissions from many different authors. You should be able to find something that suits your fancy in this great site.
http://www.thaipro.com/z1011a/429_thailand.html

Answer 2

Stickman has his own website. He started out as a blogger but has since become "commercial:. Stickman is Bangkok based with sidetrips to Pattaya.

Phil is based in the conservative south and offers another perspective.