I have a 120 Stinger with a ZDZ 40 and have a blast with it.It will hover vertical and pull out vertical but not rocket out vertical.Stay with the 120.I moved my elevator servos one on each side below the hor. stab and the rudder servo on the bottom of the fuse in the rear and it balanced great.The plane will float in at a snails pace to land without a hint of stall.It is truly a fun plane.The downside:The stinger is an older design and not quite as precise 3D as say my 200 Laser with a ZDZ 60 and the plastic turdle decks in the kits are terrible way to go as they crack over time.I am thinking of foam and balsa replacements.There are fiberglass ones for sale but they are $.I like my Stinger anyway as it is fun and does great inv. flatspins. Dave