What would be the best normal monster to hunt on 2x drop?

Like Morgana said, don't go hunting for specific high mts valued items, but rather a consistent flow of income. Time Temple is where i'd go as you're much more likely to get a piece of time (alot more than just 1 at that) which is more meso value than a glove attack scroll which you're likely to never find from a mob. Sell the piece of time, then buy your higher valued mts items. Area bosses are good too but inconsistent. Also hunt the mobs in TT that have good rarer drops just in case u get lucky. helm dex 60% and the like....