Kontakt LR and PCC are the same thing, it's just the German vs English product name (LR = Leiterplattenreiniger, PCC = printed circuit cleaner, which mean the same thing).
I vehemently disagree that Kontakt LR is hardly better than IPA; it's definitely much better. But I do agree that Fluxclene is better still.
I really like Techspray E-line defluxer, which is very similar to Kontakt LR, but with an even better brush (natural bristles instead of nylon). Alas, my usual supplier for it (Distrelec) has stopped carrying it.
FYI, Reichelt still has IPA in stock, part number RND 605-00129.