troybuiltmodels recommends the hs225mg for throttle on giant scale planes. but it seems there are some who dont recommend them and feel any standard-size servo is better. the one downside i can think of is that metal gears wear more quickly than nylon. any disadvantages in the electronics, compared to a standard size servo? here's the link from troybuilt:
http://www.troybuiltmodels.com/items/HS225.html
i also have a standard-size spektrum servo that came with my dx-7 that i've never used for anything. should i use that instead of the 225?