I use the FFP2 NR I get from work, I think they are brill, I have no problems with them, I change them when I think fit to do so. Be careful what masks you buy from DIY, they will sell you anything mind.
Your right, nobody knows who it is yet until the night of the dance, it's only my guess, but hope I am correct on my previous post, I will watch the thread and see who gets it.