Originally Posted by
WalksOn2Wheels
An honest question: what are you really going to use it for? I bought a 510 right when it came out because I was coming off of the super-base model 200 from back in the day. I wanted better navigation, but not full maps. I do a few events a year where there is a course available for download. I don't have maps, but it does the job well enough to keep me on track, and I SUCK at directions in unfamiliar places.
While I like the bling factor of the newer models, I have so far resisted because I find that I don't need that much in the way of nav features. Plus, we all have our phones in a jam. (Pro tip: on many phones, you can download a section of maps so that you do not need 4G, etc. to navigate sufficiently as GPS always works well on your phone)
I'm asking/going on about this because in your first post you said it was mainly for training, but you expected X amount of features from nav as well. So how important is this feature to you? You're setting yourself up for a situation with lots of hassle and extra money just for a feature that your were suddenly surprised to find out doesn't exist. Unless you see yourself using the feature at least 3 or 4 times a year, I don't see the need to go crazy.
But hey, if you just really want to 520+, go for it.
When it comes down to it, I had a much cheaper Lezyne Micro C GPS which had much of the same functionality and the ability to auto recalculate if I went off course. I was simply very surprised when I found a much more expensive Garmin or Wahoo couldn't do the same thing.
Frankly, I'd love to use this for training, then afterwards, pull out my phone and send a dynamic route to the device to a particular town or place, and have it reculate if I take a scenic road on occasion.
If you're wondering why I don't simply continue to use the Lezyne Micro C, it's because it ONLY HAS 3 DATA FIELDS... and I also enjoy the dynamic workouts through the Connect IQ apps that Xert provides on the Garmin device.