The reason why people avoid 192.168.0.x or 192.168.1.x is to avoid conflicts with default MODEM or ROUTER CONFLICTS
SMART BRO WIMAX for the fact uses 192.168.15.x where 192.168.15.1 is the gateway.
I like to use a non standard range ex.. 192.168.69.x
hell there are many options, its a personal preference anyway.