Beware that anti-fogging chemicals, basically restrainers, will lengthen your development times by leaps and bounds; your Kodak papers, in my opinion, are not interesting enough to warrant the investment of time. I don't know about the Agfa.
Take a strip from each pack, cut each strip in two. Under safelights, one half goes in fixer, the other in developer. Refix both, and compare. Any fogging at all is a bad sign, as it usually gets worse when the paper is activated. Strangely, I have found horribly fogged papers that still lithed very well. Go figure.