tbh i don't know gpsfiledeopt.com but I have used openstreetmap.org and its good although I couldn't get the routing to work (it would route using the basic Garmin basmap, giving me funny diagonal routes across roads/buildings etc).

I now use this because it allows me to use the routing function and gives me the details like openstreet does, its slightly less cluttered too and is a bit easier for me to read, slightly faster load up times/zooming times and has the major roads alphanumerical names which I'm not sure if openstreet has (if it does its not too clear)