Sorry I only answered half your question. Was getting ready for work. I think you use MON in the states, in Aussie land of koala and skip we use RON. I pretty much use 98RON. I think its equivalent to your 93MON (just from a quick google search). No ethanol in that for us yet, however some places do offer ethanol blends for reduced prices. Its around $1.60-$1.70 a litre for 98RON.
My engines also been setup with a 14:1 uncorrected compression ratio. Stock engine was around 11.7:1
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