Steve,
Park 450 is a bit less than a .15, I have 3 right now and one is in a Herr Little Extra, I use HS 55's on Ailerons and elevators and HS 81 on Rudder.
AUW is 21OZ with a 3s 2100 lipo. Flies excellent with good speed and power, very good but not unlimited vertical. My first few flights the plane was at 26OZ,
and it suffered in the vertical dept. I would dfinitely reccomend the Park 450 for sport flying up to 25OZ. You could easily get the 25OZ AUW on the cheapass
if you use micros, and build light. Otherwise I would reccomend the Park 480.