fused 3D that a os 40 will pull... boy .. oh boy your narrowing things down ....
http://www3.towerhobbies.com/cgi-bin...?&I=LXDUL8&P=0
just to lvl the playing field a 40 isn't goign to really Hover or have veritcail pull out on much .. I'd recommend the normal route small elctircs 3DHS extream flight ..
or if you budget minded I'd think about flying some larger foamy's out side if you worryed about incoutners with the ground ..
http://www.fancyfoam.com/index.php
EPP foam ..