I've actually completely stopped using Reddit since migrating to HN. The content is better, the comments are far better, and the overall user experience is massively superior.
If all you want to read is tech stuff, HN is a great replacement. If you participate in any of the smaller or narrow focus subreddits then there's no place on HN for that.
In my case that's mainly game-specific subs, and places like /r/paintball.
