I have both the 18mm x 2 and a 24mm I made. It flies well on both setups. The 18x2 is a hoot on the Aero D13-7, fast , get out of town. The D24-7, it just snaps your neck. So, most of the time I stick to the D13's. I have flown the new Quest D, as I bought a 24 pack. But I am a reloadable guy so the Aero is my go to. The 24MM one, F39 is your guy. The E-28 is also in the mix if you are short on room. Build both, alittle pricey, but the fun factor makes it worth the cash! BTW The 2x18 flies great on 2 x C6-7. My 2 grandsons love this setup.