Kansas City metro hobby shops? - Model Railroader Magazine

It looks like I will be travelling to the KC area in the next 1 - 2 weeks so I'm soliciting opinions on local hobby shops there from those who are in-the-know.  

I've done a bit of sleuthing on google and have found the following.  Would appreciate any feedback on what is and is not worth my time - which is limited as I also want to take some time to do some railfanning after my wife corrals me into picking up items at IKEA...

North Kansas City: Hobby Town on N. Oak Trafficway.

In The Bottoms: Doc's Caboose.

Overland Park: Fred's Train Shop (Santa Fe Drive) and Hobby Haven (on Metcalf)

Southern Overland Park/Leawood: Frank's Train Shop

Southern KC (Grandview): Show Me Model Railroad Co.

I will mostly be looking for Atlas switches so I can continue track laying.  My LHS has been out of code 100 #6 and #4 for a good year+.  It's ridiculous.  Anyone in the KC area consider one or more of these a "go to" store?

Thanks.