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For the mirror, I usually side out all my Force of Will plus some number of Swords to Plowshares. I generally bring in Dark Confidants, Vendilion Cliques, Sword of Feast and Famine, and Surgical Extractions. You don't necessarily need all 4 Jaces in the mirror because there are a lot of ways to keep your opponent's Jace off the board (Countermagic, Lingering Souls, EOT Flash creatures, etc.). Having that 4th Jace makes the deck a little clunkier--especially when it could be something else, like a Thoughtseize, that'd nab important cards from their hand or set up a clear path to play your own Jace.
When I said "control mirror" I think that I meant Jace mirror more than Esper mirror, but it seems to be that there are simply better cards for filling that role against control decks. I am curious about everyone boarding out their Forces against other blue decks. That makes sense against BUG, where you are just grinding out cards, and to some extent in the Blade mirror because you can match threats so well. However I would think that you would want all of your countermagic against Miracles as a resolved Countertop lock is pretty good against us.