I am using JEFA Tech low loss 400 coax. I don't know compared to Times LMR400 because I have never used 400 type coax ever. I used the JEFA Tech to replace an old run of RG213.
Mine came with nickel/silver PL-259 that had been crimped on the coax side, and soldered on the contact side. Seemed to be good quality.
But I replaced them with Amphenol silver/silver and crimp/crimp. Yes I crimped the contact too. Amphenol 182130-10 are optimized for 400 type coax. The center conductor crimps at .118.
UHF Straight Crimp Plug Times LMR-400 Optimized Belden 9913 50 Ohm
www.amphenolrf.com