It's going to come down to personal preference and time spent with each product. I have used both and both seem to have similar if not identical features. Base map's link with Sig rangefinders is amazing and I actually requested this from OnX a year or so before Basemaps came out with it. Ultimately, I use OnX more now due to my hunting friend group using OnX exclusively. So even though basemaps is more affordable I am less likely to keep my subscription up to date year to year.