Honestly they've all been good. The 55 rg wasn't an issue, but a 55 rg box-pressed cigar was interesting, in terms of the mouth feel. The Double Nickel was also the shortest one for me so far, at 1h 40m, as opposed to two hours for the others.
For me, at this point, I would not favor any of the vitolas over the other. The Toro is the cheapest of the bunch, in terms of the price of a box, so maybe I'd lean that way. Or you could just go with whichever is closing the soonest on CBid, or gives you the best price per cigar on CBid.