Can I do any better than BJC LC-1 or Gotham GAC-1 Ultra Pro for the money?

Got it.  Well, you could buy one of the AZ interconnects for only about $165 for the arguably more important connection from pre to amp and go cheaper for the Atmos connections.  Just a thought FWIW.  

OP, measurements? I don't think so, not at least from a practical point of view. It's really about synergy between components and your speakers/ears. Lack of meaningful measurements is one of the reasons that that is so much discussion about cables in the first place. Don't get me wrong, there are measurements that are meaningful for someone who knows how to use them in the context of their system, but no one can really make really meaningful recommendations without experience with your stuff, in your room, and specific sonic preferences sound wise.

Yes you can…i used WBC mogami cables until I tried some Nordost odin 2 and Gold Chinese copies.  Way better if you don’t have an issue buying Chinese.  Stunning SQ for the 💰.  Highly recommended by many. Check out this thread.

https://forum.audiogon.com/discussions/counterfeit-chinese-cables

@newbee but is someone claims say one cable has highs that are rolled off vs another, I surely should be able to measure that. Dont you agree?

No, I don't agree. As previously indicated there are measurements available for cables, but cables/IC's, etc are meant to connect 2 components, and the sum of these three items would be the meaningful measurements to consider. Most folks I believe have neither the competence nor equipment necessary to make such measurements, nor the ability to assess how much of what they hear comes from other components or room set up. 

FWIW, when it comes to describing sonic differences, I'm not sure you will be able to get any uniformity of opinion about what constitutes high frequencies. There are primary tones and there are overtones. The frequency range for 'high frequencies' for the former can be up to say 2500 to 3500 hz (unless you are listening to a recorder or Ema Sumac) and overtones ranging from 3500 hz up to dog frequencies. When I think about what constitutes high frequencies I think of 'overtones' because that makes the spectrum more natural. But I know of folks who think high frequencies consist of the sound in the 2500 hertz range. In fact some equipment manufacturers have been know to juice up that range to give their components a greater sense of highs. 

So my original advise still stands. Take it and you will have a personal view of the type of sound you which to hear. Hopefully you will like one of the two and then be able to make your decision accordingly. 

Good luck.