I've used Topo products a lot, but their recent migration has me beyond just "disinchanted". Their old mapxchange process was easy to allow topo users to upload and share or download route files from other users. I *think* this might still work, but to do it now I would have to install their new "explorer" product, something clearly designed from a perspective of "extract more $$ from our users on an on-going basis" model. I've started multiple times to do it anyway, but each time I get irritated enough that I don't follow through.
They've taken something that was built as an easy-to-use community for existing users into something more confusing, harder, and now requiring special software.
Despite my having invested in state specific software for three states plus their (buggy) Pocket Topo product, I've decided to switch to try http://www.memory-map.com software. These guys also sell maps, but you don't have to buy them from them … you can just purchase their navigator product and then get USGS maps for free from libremap.org or seamless.usgs.gov in GeoTiff format.
I have as yet no idea whether this will turn out to be a better product or not, but between the Nat. Geo. Topo model change and bugs they told me they would never fix and the cost to buy what are otherwise free USGS maps on a per-state basis — I'm hoping that I'm done with National Geographic Topo products.
