[50mhz] 6m yagi

[r miles]

I did a post a few days ago asking  about HyGain 6m antennas. I've read a few items that say since MFJ took over their QC is bad.
I'm looking to replace my 3 el Cushcraft with sometning a bit better. I'd like 4 el or 5  in a 12' or less boom. And $$ is an object. 
I found several. Gushcraft,Comet,HyGain & if I can pull up the $$ M2.
.........
I'd like some opinions/experience with any or all. Or am I missing some?
K9IL