One thing I've always wondered is why anyone would stick with anything in the 192.168 range when the 10.0.0.0 class A is also available for local allocations, and significantly easier to remember?
My first router could only do the 192.168 range so I got in the habit of it. Later with subsequent routers, all my devices were already set up on a specific class C network, so it was easier to change the router than go through all the devices and change them.