The verdict
For a small B2B team, I'd pick LinkedIn Ads first. You choose exactly who sees the ad, and the platform is built for work audiences. I'd pick X Ads for a specific job: reaching people during a live conversation, or promoting content to an audience that already follows your space. It has no minimum budget, so it is a cheap test. Engagement on X has moved a lot in recent years, so read the results before you scale. If your buyers barely use X, skip it and put the budget on LinkedIn.