Of the series you mention....
NOL - I know of FAXheads who love it, I bought the first one and found it....erm....challenging to say the least. I was advised to try listening to it in a darkened room. That was one scary trip !! Might do it again some time when feeling brave
SILENCE - 3 and 4 are okay, however imho Silence V is an absolute FAX ambient masterpiece. I have listened to that album hundreds of times.
MOVE D/ NAMLOOK. Have about 8 of these and like them all. XX Taygete , is probably my favourite. I previewed them all carefully on iTunes first though as I tended to do with all purchases.
VIRTUAL VICES - IV was my first ever FAX, I love it , will be in my top 5 , great mix of styles . The others are ok.
FIRES OF ORK - 1 is not really my thing but I play it occasionally . I still have to get 2 off bandcamp. When I previewed it though it was much more in my groove.
LABYRINTH - Have to say I like all of them.
As mentioned I tended to preview all FAX before purchasing so managed to avoid some of the few more techno/ beat orientated releases. Not really into that at all.
The one series I was a bit disappointed with was PEARL. Will have to give them another go sometime.