The hard part is that reddit is majority liberal, so it's very very hard to find a good balance.
Any random non-political subreddit is going to be liberal slanted. In order to find a conservative slant you have to go specifically to a political conservative subreddit.
Center left: /r/neoliberal
Right: /r/neoconnwo
Center right: /r/tuesday
Neutral: /r/neutralpolitics /r/geopolitics /r/politicalfactchecking /r/truepolitics
A spectrum of subreddits across ideological views, all with discussions you may actually learn something from. You’ll notice that none of those subreddits have been suspended because their members and moderators are repeatedly calling for violence against their political opponents, nor are they just recruiting boards for Stormfront. Again, finding the fringe conspiracy theorists repeatedly calling for violence doesn’t actually give you a well informed or balanced perspective.
I can list plenty of subreddits with worthwhile political discussion, but none of that matters if a persons idea of “balanced” is to find the dregs of fringe and extreme political movements and use them as the basis of said balance. I’d wager that those subreddits represent less than 10% of the views of most Americans.