My suggestion is to go somewhere that they have a sim of some sort. I did my CFII/MEI in Atlanta, where they had two, very old and rickety, but functioning sims. It had been a while since I had flown any twin, so the sim time was a huge plus. At the time I went, you could have all of the sim time you wanted, or could stand. I found this to be extremely helpful.
I had good luck in Atlanta, but anywhere you go you will have a quality program. I give ATP really high marks.