I think the XT60 connectors are junk and the company that promotes them is not very good either (but that's another discussion). Deans have been around for a long time and are a proven connector. Just don't buy the cheap copies. What a manufacturer installs on a battery doesn't mean much as most users cut them off and put something else on. The better battery manufactures sell their packs with no connector installed.
Pick one style connector and put them on everything you fly/drive.