The verdict
For a small B2B team, I'd pick LinkedIn Ads as the first paid test if your buyers are identifiable by role. It is the more predictable way to reach the right person. I'd add Reddit Ads second, when your category is discussed in communities that you can name and you can write native-sounding copy. If you sell to a broad audience with no clear community, skip Reddit. If your Google and Meta costs keep rising, Reddit is a cheap way to find a different kind of intent. Give each channel the same goal and a capped budget, then compare.