After Kodak discontinued Polymax FA, I tested all of the leading brands (Luminos, Kentmere, Ilford, Forte, Oriental, Zone VI) and did a relatively blinded comparison. I kept choosing Kentmere so now I use Kentmere FP VS.
Kentmere is neutral to cold black and responds very well to toner. I use Zone VI developer 1:3. The price of the paper is not out of line. It dries very flat. I buy it from Freestlye and it is seems to be available all the time without backorders. Quite pleased with it.