Use methanol if it doesn't punish you class wise or is more beneficial record wise.
In a short response, methanol carries some of its own oxygen with it and is generally forgiving in tune-up. It will generally make more power even with liquid coming out of the pipes. Although you have found that it needs lots more fuel than gasoline, it has the potential to make more power than gasoline. Somewhere around 6-7% more at peak power and about 11% more at peak torque.
Methanol is very prone to preignite regardless of the compression ratio.
Be sure that if you use carburetors that the "high speed" circuit is capable of handling more fuel.
Try and get some chassis dyno time before you go to the salt this next time so that you can get a handle on getting the right amount of fuel and spark so that your flatmotor will be happy!
Regards to All,
HB2