I am not real familiar with the pt 25 But I think its a med. sized or maybe a bit under med. sized gyro, as for the G3po I have just ordered one, It is a smaller parkflyer sized one, has full cyclic and rudder, uses li-po batteries and a brushless outrunner motor. Videos on his web site of it flying, I am also new and these seem harder to get right than I thought when I had looked into building one, As for is it wortht he money for his kit, from the info he has given me, along with much help I'd say yes, especially if its someone new to this. You can ask a question about the G3po on here and he will get to it fairly quickly, maybe not till after the weekend though, i dunno...anyway here is the websight www.mickeynowell.com/id9.html Thats all the info I will have until I get the kit.