i've tried shell & petron with their low end & high end fuels. to be honest with that E10 thing, i haven't really had any bad experienced with it (extra unleaded & regular unleaded user here), more so with XCS, Blaze, Premium & V-Power. although i must admit that using hi-end fuel really gave me more hatak and engine noise/behaviour seems to be more consistent.

with gas prices sky-rocketing high now as a "revenge" from the manufacturers due to the previous price freeze, i'm now forced to use regular unleaded gas just to get the extra mile. but when my wallet is in a good mood, i'll take XCS hands down.