Just like the title sez, I'm looking for a decent handheld GPS that won't break the bank. I've been leaning toward a Magellan Sportrak but undecided which model ($$$) I should get. Do I need a topo version or will a more basic version do (ie still do the altitude as well as coordinates). With the topo version it seems like your just paying for more memory and the pre-installed topo maps. So what's the word m-buzzers?