My 205 was totally worth the investment, even for a grad student with little extra $$. I have also found it to be very consistent for the same routes, which helps me monitor how I do from run to run. I have used it on a track, too (to record my splits), and it has been surprisingly accurate. Just because I'm obsessive, I usually run an extra 0.03-0.05 to make sure I ran the complete distance. But I do that on the treadmill, too. Maybe that obsessiveness will pay off someday.