Thank you masbt Looks better, the highlights seem really strong though. The texture on the plane is really blurry, is it actually like that or is there filtering applied? Something was irking me about that glass shader so I went back and checked again, you had the transparency all the way up but it was still so dark. Then I realized it was just picking up too much of the dark grey floor in the reflections so I used fresnel reflections, even made another glass shader to compare and it was indeed the reflections.

Jay's test made me want to putz around with the dielectric shader, it looks good but how would you get rid of that grain? I always found that shader to be a little unfriendly, simple is good sometimes but for that reason I couldn't figure out the grain issue.