A friend replaced his Yggy(the original style) with the Bricasti and couldn't be happier. I've always been impressed with the Bricasti after hearing them in a number of systems. That's coming from a former Gungnir owner.
Yggys now come in multiple flavors as they had to change the design due to lack of available parts. Be sure to notice which Yggy people mean when considering their viewpoints. Jason S. of Schitt talks candidly in great detail about their manuevers on their youtube channel. Cheers,
Spencer