Got the newer one with the 16000 preloaded courses on it. Every course I've played in my local area (North-Central MN) is on here. Considering that and the fact that I do not have to bother loading courses on my computer I'd say it's worth the money right there.
However, I'd have to say that I'm not quite as pleased with the accuracy out of the box. On the courses I play a lot I find myself using the "remapping" feature quite a bit the first time around. Once it's re-mapped then it's good to go and quite accurate. Any time I bring the unit to a course for the first time, I simply don't trust the yardages. After I've customized and remapped the course, then I'll rely on it quite a bit.
Case in point, the local course where I'm a member had the wrong hole mapped for the first hole. Whoever mapped it had mistakenly identified hole #7 as the first hole and went from there. I can see how this could happen here as the seventh tee is next to the parking lot. Even when I figured out which was the correct hole to be on, the yardages were still off by as much as 10 yards. I have a 3.7 hdcp index and 10 yards can be like a mile to a better golfer. I have obviously re-mapped this course (with correct holes) and it is now dead on but due to this I am quite wary when bringing it somewhere new. Check it against yardages marked in the fairway and if it doesn't seem to match, put it in your pocket and just re-map as you play. It only takes a minute to map the front, center and back of each green. Next time you visit the course it should be dead on.
I do like the fact that I can customize and map out key points on each hole such as bunkers and water hazards. In the end I give the unit itself 5 stars but the accuracy of the preloaded courses only 1 star, which thankfully can be fixed. Add those together and I give it 3 stars.