Can only say on specs, and I'd say which ever is cheaper, taking into consideration that I have no idea what the quality of the Samsung device is like. Surface devices certainly look and feel premium on the outside, however enough people have post-warranty problems, and I don't have much faith in MS devices after the warranty runs out.
With that said, I much prefer the 1920x1280 resolution, since my OCD says that you can watch FHD video without any pixel scaling, it's something. I think MS purposely hobbled the Go in this regard.
Otherwise, battery life looks like it may be a problem with the Galaxy, however, get a 20,000mah power bank and you'll be good for portable power, don't need to worry about AC power at all then.