Garmin 64ST handheld GPS. Open maps?

[CaseyJ955]

I got all my Black Hills trail maps installed and working great but when I took this thing out to CO last year I found that it would not navigate anything. I put it away when I got back instead of addressing the issue, which as it turns out is the lack of a good street map. I could pay Garmin another bone to get theirs, but after shelling out hundreds for the unit I decided against that. I see there are a few open source maps and even folks using outdated maps to escape paying, which I'm not averse to but the maps from my 60CSX dont seem to work.

 

Does anyone have any experience with any quality open source maps on the free/cheap side of things. Anyone have any maps that would work, I really rely on this to keep me away from cities. Any links to some quality maps or a site that deals with this sort of thing. I found a few sights but wondering about quality of maps. I would hate to get out there and find my GPS useless, again.

 

Outdated maps are fine for me, they are more than ample for the places I end up.

 

I just fired up my Venture for the first time this year, the Black Hills are already jammed with tourists and I MUST get the F out of here for a few days! Any knowledge on said maps would be welcomed with commercial grade gratitude. The rolling vacant plains are calling out to me in a big way this fine day!

 

Thanks!!