It's pretty stable in a hover, not quite as solid as my Laser3D, but then not much is! :-) All up weight is between 11.25 and 11.5 pounds, without fuel. Obviously take off weight would be higher, I have a 16 ounce tank in it. I use an 18X6W APC prop, and find it great.

Someone asked about using a Mejzlik prop. Yes, the hole is too big, but that's easily fixed. I actually made it a little bit bigger, then put in a piece of brass tubing that fit the prop shaft exactly. I would guess it to be something like 3/8 ID, and the OD was just a bit larger than the hole in the prop. Cut a piece 3/8 inch long, and fit it in the prop, then enjoy!