RE: Profile 3d ARF which one
there are 3 katana V2 70's on our field - including mine.
I fly mine with a saito 100 which is WAY overpowered, the other 2 are flying with OS 91FS pumpers which are just a "perfect" fit.
FYI, the OMP katana v2 70's are *VERY* fragile, lowest quality materials all around - cheaply made planes BUT!... FANTASTIC fliers.