Quoted from GorillaBiscuits:I just picked up invisiglass for my remaining three machines at $265 a pop. Of course Stern released something comparable for a cheaper price two days after. I also just picked up a Tron... you're all welcome for the incoming VE, I can't win haha.
Except Stern being Stern we don't know how it stacks up against PDI and Invisiglass. This may be a blessing in disguise for you.