My favorite hobby shop for S scale equipment is Port Lines Hobby Supplies owned and managed by Doug Peck. He knows his stuff and is very reliable. Click here for details:
Also, I like Hoquat Hobbies run by Jeff Wilson. Click here for info:
I have never been disappointed by either of the above two shops.
For product reviews, photos, video clips, questions/answers, etc., I really like the NMRA-affiliated S SIG which is here:
Hope this helps. Enjoy........Ed Loizeaux