hi i am looking to buy a gps i can use on my ktm 990 as well as in my truck. i want the best most reliable gps i can buy. i was looking a the garmin 660/665 becuse my bike has a touratech mount already on it for that gps. but after reading about it i am not sure that it is all that great and for $799 or so for the 665lm it should be pretty great in my opinion. but that does not seem to be that case. Ill be using the gps for driveing on the road mostly but i think i like the features of montana. so what would i need to get the montana all set up and ready to go. ie (maps, mounts, stuff) also will it blue tooth turn by turn?