I am seeking a low-priced handheld GPS unit. I mostly hike well established and maintained but poorly marked trails. I want something simple and dependable.

While it would be nice to have things like a digital compass and an altimeter, I can do without to keep the price lower.

If I go on eBay I see tons of older units in mint shape (or factory reconditioned) for very low prices. I'm curious if there are any "classic" units out there that provide good, long-lasting value? Thanks much.