Board Thread:Game Discussion/@comment-75.78.103.8-20150723232033/@comment-26249703-20150725131908

It earns more gold/unit of time, that's for sure. But if you're looking at it from gold/level up(s), that value will be less. In summary, you earn more in the same amount of time by always having the agent for the 10-lapper, but earn more by level if you only use it when it's free. I've been using the latter strategy but it does make sense to use the former, which I might do. The only reason to use the latter would be if there was a level cap, now that I think about it, but even racers that are still active and have been around from the start aren't near level 1000, which is probably not a cap anyway.