[TowerTalk] Ultraflex coax questions

[Howard W6HDG]

Hi all.  I am about to order about 110 feet of coax for a new 
MA770MDP tower/ Steppir DB18 install.    I'm thinking of using either 
genuine LMR400 Ultraflex or Davis Bury Flex coax.

Davis BuryFlex is cheaper and I understand it has a tougher and more 
slippery jacket for crank up/down use?   Opinions?

I am going to try crimp-on RFU-507SI RF Industries PL-259's for the 
first time.  For the center conductor crimp, I have alternatively 
heard of .118 and .128 crimpers being used.   I have the dies for 
both .118 and .128 as well as the .429 braid crimp.  Any opinions? Do 
you use any dielectric compound such as STUF inside the PL259 to 
inhibit corrosion?

Tnx, Howard W6HDG