I'd push back a bit on the idea that fuel injection is some massive game-changer for casual weekend riding. If you're actually *using* the bike regularly - even just once a week - a carbureted bike from 2015 will run fine. The gumming-up stuff people mention mostly happens when bikes sit for months untouched. What matters more is whether *you* plan to ride it consistently or let it gather dust between outings.
That said, there's real convenience there that goes beyond just reliability. Cold starts on carbed bikes can be annoying, especially if you're dealing with seasonal temp swaps or just want to hop on without fussing with chokes. The Honda is also five years newer, so you're probably getting fresher components overall, not just the injection system. The $800 gap is worth considering though - could you put that toward gear, maintenance fund, or just keep it in your pocket? How often are you actually planning to ride, and would the bike sit for stretches at a time between trips?