unfortunately , I live in the stick and have no close access to play with any gp unit before I purchase one ... so I have to rely on mail order . thank goodness for Amazon . like : - Quick Satellite retrieval - show lat , Long , and altitude -lrb- you have to find this menu -rrb- - many point of interest available - small and easy to carry around , but big enough to see while drive . - Easy to navigate the menu system - decent battery life - it have be report that topographic map can be upload to this machine use the expertgp software by a third party company . I have not try this yet , but I like the idea as I hike a lot . dislike : - Garmin be a nickel and dime you to death company . I understand have to make a profit , but older unit come with pc software this unit do not ... ... no Software for pc include to plot trip and later upload to the unit . for $ 100 more you can buy this software . - you can only save one route at a time . you can save up to 500 waypoint , but only one route . - you have to pop the antenna up in order for it to acquire satellite . so it do not fit nicely in you hand if you decide to use it hiking . -lrb- yes - I know that it be make for automotive usage , but it can be convert easily as a hand hold unit with of course purchasing software for it -rrb- . - no easy battery change out without break into the unit . these modify cell phone lithium type battery typically last a year and I `` m sure Garmin have make the battery proprietary and it will cost the price of a new unit to change out . only conjecture here -lrb- when that time come I 'll hack into it as it will be out of warranty - I be a do it yourself kind of guy -rrb- - m Vista file transfer be painfully slow act like a usb 1.1 compliant unit . I back up the file from my Nuvi to Vista . 1.36 gb take 1 hour and after it time out a couple of time . on the other hand Ubuntu Linux transfer be extremely quick - 1.36 gb take 5 minute . I be not sure if this be a Garmin issue or a Windows vista issue since it be snappy on my Ubuntu machine . most likley vista driver issue . - map be outdate . I work in my county court house which be 8 year old and it be not on the map . the road to my house be 8 year old and it be not on the map . so I will have to update the map software ad cross my finger that I can locate myself : -rrb- I be sure this will cost money for a update ? the interesting thing be that business appear update . hmm ... county municipality be not show , but a business that be 1-2 year old be . I wonder if Garmin make money from put private business on they map first and road come secondary ? I call Garmin to see if the unit be suppose to come with the pc software . they state that the unit contain internal software and I can program it by use the unit . I jokingly state do you know how long it will take my fat finger to program this small unit ? I be then tell I could purchase the software for my pc . I say for the price of the unit I just assume it come with software . again I be tell that it be build in , but I can purchase the same software for $ 100 to run on my pc . Garmin have not fully win I over unless I can find some nice cheap shareware\/freeware to hack into this unit and make it functional to link up to my pc for map sequence . I 'll play with this unit a few day and see if it grow on I if not it go back and I will buy something cheaper that will do the same thing . do not get I wrong ... I like the unit and it be sturdy , its just lack update map and no pc software to plot you course to upload to the unit which I believe a unit this expensive should have .