RE: What kind of fuel is best for my engines?
Any decent 15% nitro will be just fine. I've been using S&W 15% nitro for several years now on all the planes shown below and it works just fine. The brand is irrelavent. I just happen to use S&W because that's what the LHS was selling. Everyone has an opinion on the brand of fuel.. thunder power, omega, and as in my case, S&W... but as I said, any good brand of 15% nitro will do just fine.
In addition to the ones shown below, I also have a Goldberg Wildstick 40 with an OS 46 SX, a Hobbico Super Star trainer that I bought for the club to use as a club trainer, this also has an OS 46 SX. I also am building a Sig Something Extra kit, which will be powered by an OS 50 SX, and am just about finished building a Seagull Super Star 3D'er ARF and that has an OS 1.60 on board. All will use the same fuel.
In fact, I won two gallons of Thunder Power 15% that I will use when I run out of the S&W that I have been using. It just doesn't matter all that much.
Whatever runs good... use it.
DS.