I recently bought a Garmin GPS MAP 276C. One of the major reasons for this purchase was the function "Custom Avoids and Custom Road preferences to Road Routing setup". This option should be really well suited for motorbike use to be able to be routed to the destination on really small roads for example. I have tried this on different occasions but I haven't seen any difference in the calculated route whatever I chose there. I use the european cityselect 7. This option should also be available on other GPS units, for example the 2610 and 2620. Anyone with experience?