I have been looking onto both systems....and im pretty sure water is the best way to go for what I want.Alky is just as safe, and probably more effective more making power as an end result, but the water is an all around better source of cleaner more efficient injection. Alky would produce more power by creating a more combustable mix, but there are a few problems with doing this.Alky will be using the same principle as race gas, no? Race ags produces power from higher comb. properties, and lower egt's. But just like race gas, alky, i have heard that alky isnt as freindly on your seals and also is horrible on your o2 sensors. Its like running 116 all the time. well, that is if you are ALWAYS in boost. The water injection is what i think im into more. If you want power adding properties and th conveince of water injection--just use methanol. Water/methanol injection is more for safety and for internal cooling properties than it is for producing power. Using water.methanol reduces egt's roughly 100 deg f when in use at your preset boost level. Race team use alky for power--companies like ford motorsport, and cossie rally use water/methanol because it is, in hte long, run safer and more efficient to the everyday driver. Plus===water's alot cheaper than alky:D .Not to mention, if it ever happened---id rather develop a leaky water tank, thana leaky alky tank under the hood

But im still thinking on it--right now im leaning more toward the water/methanol injection.