If you do a search on this forum, late last fall early winter, there was some topics covering this question.
I believe some fellas have some nice overlays with existing snowmobile trails which you can load on to your GPS, which would be highly desireable if you plan on using the GPS for sledding and ATV use in the Upper Pen., maybe other areas and states too.
Seems to me that the uploads were free, but I might be mistaken on that one.
I own the Garmin, and am pretty happy with it....use it for snowmo, atv, bike, and car....it works fine. My model is also voice activated (855) so i can voice input rather than have to use the touch screen. Voice is useless for all but the car/truck...but I use it most there so I paid a bit more for it for that reason.
Once you get one and use it, you will wonder how you got along without it.
BTW, welkum to JD....