IMO, the features to look for in applique scissors, or any sewing scissors for that matter, are A) a comfortable grip, and B) micro-serrated blades. The micro-serrations will grip the fabric and prevent them it from slipping while you cut.
So, having said that, I think your best bet is the Karen Kay Buckley scissors, or Kai. I have 7 pairs, all different sizes, of Kai scissors and they are awesome. Kai will sharpen them for free, also. You send the scissors to them along with $5 for return postage.
Years ago I picked up the funny-looking duck-billed scissors. The handles are metal, which hurt my hands after a few minutes, and I didn't like that larger blade, it was a blind spot for me.