Hi, it's not about rentals, x11 is not the only algo that could be rented, but it is the only one which gets a few hundred gigashashes thrown at it and dumped below the cost of production. Multiwalletcoin had 14k diff at one point and look at it's price. Same goes for most x11 coins.
X11 is far from being energy efficient and a large portion of the distribution has no interest in the coin other then dumping which pretty much acts as a handicap and so I don't see any logical reasons to pick it. But of course this is your show, and this is just my opinion.
true, you guys would be much better off with an algo that isn't smashed by the multipools and the asian 80 ghs multipool. nist5 runs ok, qubit is nice and cool also. i'll mine whatever but long term x11 I think will only hurt growth.
edit: oops. just saw x15 now, thats cool