I've heard from people with considerably more nitro experience that VP and Flashpoint are the good fuels to get.

Of the different VP fuels, I have seen claims that the Lutz blend is the most engine-friendly, but that seems like the sort of thing that would need some complex testing to confirm. I always use after-run oil anyway, so anything about some fuel needing it and others don't just doesn't apply to me.

For break-in, there are break-in fuels, but you can also get a quart of Klotz synthetic 2-stroke oil and add a few percent to regular racing fuel.