Inasmuch as I'm starting 2 new projects and there not being any reviews of these on their site, can anyone shine some light here? I could use both an 8" and 5", either mid or FR. prices appear very attractive.
In general you can rely on a high consistency of individual Visaton drivers. Most of the offered drivers have been manufactured for years or even decades. I bought four of the cheap FRS5 drivers at different times from diffferent vendors and found the frequency responses within a +/-1 dB band.
I still use the W250 paired in H frames - a very affordable solution for small rooms and lower SPL demands. TSP are almost perfect and while lacking pole vents or vented spiders, there is no chuffing or other air noise.
From the W xxxS drivers I know the W 130S. After treating the steel basket with a generous amount of bitumen mat it was a fine OB midwoofer usable from 400-2000 Hz
Odd that the B200 isn't there... 
Obviously PE is importing the "lower" half of the Visaton product range, not the "serious" drivers. From some distance the BG 20 without the whizzer looks like a B200. There are a few proposals which combine the B200 with two discectomised BG20 as helper "woofers". As stand-alone fullranger I found the BG20 unbearable.
Rudolf
