Hobby king has recently introduced the Thunder QQ Super - Multi-Rotor Flight Controller at $20.
At the same time guys at RCBazaar has managed to showcase the same product for sale Avionic HEXA-QUAD controller at 2300
to RCB for taking the effort to brand the same product and release it before HobbyKing !!

The only difference I can see was that HK provides a screwdriver for gain adjustments but RCB doesn't provide a screwdriver(thats not an issue)

http://www.rcbazaar.com/products/2439-avionic-hexa-quad-controller.aspx
http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=57155&aff=576071


Manuals:

Both the manuals look alike ,except that RCB has took effort to edit and make a professional looking one.
RCB Manual - https://drive.google.com/file/d/0B4saiZvhGj-CejBRSU1HdHVfQWM/edit?usp=sharing
HK Manual - http://www.hobbyking.com/hobbyking/store/uploads/455648759X124515X44.jpg and http://www.hobbyking.com/hobbyking/store/uploads/455648759X124515X53.jpg

Pics from Hobbyking





Pics from RCbazaar





The rest is left to the members for review..

This is nothing new very old FC, my suppliers told me about this Jan-Feb of this year. I did some digging about this and found that its not so good.

You can read more about it here: http://www.rcgroups.com/forums/showthread.php?t=2050646

I had one already bough sometime back from banggood.com
It works pretty good.. a good replacement for kk2 but just quadcopter and hexacopter

You can consider this as well
http://www.thehobbyshop.in/index.php?main_page=product_info&products_id=279

Thunder qq one looks more stable than avionic and less in price.. avionics not yet tested ofcourse...

The pid tuning is very boring like our old kk5.5..
Only thing is it lools small and light weight..
I never used it after testing.. :p