If you go with Iron Rangers, cedar shoe trees add to the longevity. They wick away moisture, prevent mold, help the shoe keep it's shape, and prevents the leather from cracking.

Shoes trees and a horsehair brush will go a long way with those boots. Second on rotating boots as well.

I own a few pairs of red wings and advocate for them, but iron rangers aren't the most comfortable even after break in.

For work, I would suggest thorogoods (more budget friendly), nicks, whites (they released a moc toe that's competitively priced).

If you get a moc toe, the white crepe wedge soles do wear down a little faster than a rubber tread sole like the iron rangers, but are far more comfortable. Also, those all these can be resoled relatively easily if you know a decent cobbler.

Edit: Just checked and whites boots currently has a sale until 11/29.

Just don't leave it on for too long

This, lots of their work boots are made in china/overseas now.

Their heritage/fashion line is still made in the US though and are still built to last.