What would you all recommend for a good GPS unit? Anybody got one they are looking to unload?

I have recently found some new land to hunt on. I found some good spots with some good scrapes going on. The only problem is that I can find my way in but it is different all the time with a little wondering. I am tring to find a decent GPS unit so that I can track my way directly to the stand. More importantly getting out in the dark.

Thanks for your help & thoughts.