Okay.. a quick update on these PBS cubes;
Krazer is in the process of testing the sample I sent him and has reported back that from initial testing these seem to be performing at least as well as my crude test figures and possibly better

More details to follow when he's finished work, and I would like to extend a public 'thank you' to him for getting involved, good sport
The manufacturer started cutting the glass yesterday for 200 PBS's and some more prisms, I'm waiting on an ETA and negotiating with them to work out a better deal on pricing so our hard working janitorial dept can procure a new 2010 model cyber mop and 64bit bucket.
I have assumed those that put their hands up for "2 or 4" will go for the "4" on the basis they perform ok (please let me know if this is not the case) so we have 182 PBS allocated out of 200, so there's 18 available, first come first served.
If demand exceeds 200 quickly I
may be able to increase the qty..
I'll send out the payment info next week in batches, so hold tight
