Which Coax do you recommend?

[NQ6U]

I was going to order 50' of Belden 8262 but it looks like its being discontinued according to AES.

Which coax do you recommend?

I'm going to be installing it in about a 15'-20' length. Its going to go through the wall, and directly onto the roof where the Antenna will be mounted.

What frequencies do you plan on using it for?