RG213U- a practical alternative?

[rognvald]

This year I am completely reconditioning/rewiring my mast. In attempting to provide the best possible installation/reception/transmission, I read that RG213U would be the best antenna wire for my VHF. However, when I read the specs, the cable is 3/8" in diameter which is quite sizeable next to the RG8U Foam core and would not only be considerable weight aloft, but could be a real "bellringer" inside the mast. Which will provide the best all around performance based upon these practical considerations? Are there any other considerations I have overlooked? Also, is there a premium brand for terminal connections at the radio/antenna ends? All "techy" responses will be greatly appreciated.