For decks with three or more colors, where you might only be able to afford a small number of MDFCs since you'll need most of your lands to either be basics (for ramping / tutoring purposes) or tap for multiple colors of mana, the best MDFCs are Bala Ged Recovery (seriously, if you have green mana in your deck, play this card), Valakut Awakening, Hagra Mauling, and Ondu Inversion, along with the mythic cycle, which is almost always good if you can afford another land that only taps for a single color of mana
they have a higher sales price, but youre more likely to open valuable cards
However, there are situations where you'll value the +2,000 Counter more than the Trigger
There are quite a few foil copies of this card, but the Innistrad foil is the one that Id pick to gain the most value going forward