My understanding of the planes exact throttle usage is not known. I have heard that some are either on or off power via a toggle switch, meaning there is only full power with switch on (makes the plane climb), and no power with it off (forcing a descent). Some planes are variable with up being more throttle and bringing the stick down lowers the prop speed (center might make for level flight), full down being off (no power means plane comes down). My advice would be to get a demo from your local hobby store or email the manufacturer of whatever plane you are considering. Always, always keep in mind that wind plays a big part in any flight. If you live in an area that has frequent winds, something with more power is likely to help you keep control. The razors edge to that is, with more power comes more speed. Be sure to get something that your skill level can control. I am not an expert but as I have said, I have talked and more importantly listened to many veteran RC pilots at a local club and they were very helpful in making my decision. If you have that kind of a resource, I would recommend a visit out to watch them and strike up a conversation. They may have some planes on hand that they could show you or at least have had some stick time with something you may be looking at buying. Good luck.

Jeff