I'm guessing that the Mini Pulse, and the Mini Pulse XT are one & the same ??? If so, .....................a few years back, the xt on glo was a pretty popular combo. The plane was a bit lighter than the "Lil' Extra", and, if memory serves me right, guys were getting OK results with a good running .09 or .10. I'd lean towards the .15. I think that when the Little Extra went outta production, that's when the Pulse got a little more popular. Never did own the Pulse, so be advised, all this "info" is second hand. Only thing "bad" 'bout the Pulse; it's a bit pricey. .............................. George K