Just ordered a Garmin nuvi 500 w topo installed.. I also have a Etrex legend.
So.. From what I understand from this post...
> I can download higher detailed 24k scale maps into the nuvi for free.. COOL!
>The Nuvi will not allow me to download my tracks to a computer?! I thought the Garmin website said otherwise....
Will the Mapsource 24K Topo SD cards allow me to download my tracks?
My Legend does it without a hitch.
While I have not used a Nuvi 500, none
of the Nuvi's I have played will would store a track. However in reading the information on the Garmin web site it states that it will store 10 routes. So you should be good to go with out anything else. My only problem with the 500 is the topo maps that are included are the lower resolution maps, not the higher resolution maps that can be down loaded for free. Now the cool thing about the low resolution maps is you can load the whole USA at once. The high resolution maps take more memory so you can only load a couple of states at a time.
Here is a link to a web site that does a side by side comparison of the two maps.
If it was me, I would skip the Nuvi 500, and get the Nuvi 1450. It's the same price. No topo maps (see links at start of thread to download them for free), and it is not water waterproof like the 500 claims to be, but it has a bigger screen. Bigger screen is always nicer.
That is not to say the 500 sucks or anything, the 500 is a much improvement over most street GPS out there. Also unless you are a hardcore tech/map person, the 500 will probably do every thing you want/need
You also asked about adding the higher resolution topo maps on top of the preloaded low res. I'm going to say that is probably not a good ideal. The reason being you are going to have a lot of over lapping information displayed on the screen and they will not line up 100%. In other words one map may be off one way and the other map is off the there way.
Hope this is helpful.