I have had pretty good luck with a couple of coax companies.
Judd wire, 123 wireless, Huber Suhner, Andrew/Commscope, and also heard good things about Shireen coax as well. I know the ones I listed above are good coax. My next plan is to use up this LDF4-50A I have lying around. Just waiting for now as my Andrew LMR400 or what they call CNT400 has been doing a great job even in this FL heat and sun!! 3 years now and no fading or signs or any wear! But I truly would like to get the LDF4-50A up as it's just sitting, ends already put on and ready to go!! One day. One day.