Anyone have any experience with the ambidextrous lowers from Mega or Areo Precision?

[why.kyle]

I'm looking at two different lowers, one from mega arms and one from areo precision.

http://megaarms.com/ar-15/lower-receivers/billet-lowers/gtr-3s-ambi/
http://aeroprecisionusa.com/shop/ar15-stripped-ambidextrous-lower

I can't seem to find any reviews, and I'm wondering how well they handle. My intended use is for a competition rifle.
If you have handled one or own one I'd be interested to hear your thoughts.

 

[Laphroaig]

I built a M4 using a regular Aero-precision stripped lower. Its definitely a high quality component. I'd have no qualms about building a NM service rifle around it.

Laphroaig