Blue Circle's PLC -2 Thingee conditioner versus Transparent Audio PLC 6 conditioner???:

Looking at two power line conditioners under $400 on sale.  The Blue Circle PL-2 Thingee conditioner and the Transparent Audio PL-2 # 6   conditioner.  The Blue Circle has received a few good reviews, especially Good Sound which was impressed by the: improved sound: that is:  blacker background for music, lower noise floor, better imaging and focus. I have  found little about the .Transparent Audio conditioner which has a more traditional appearance and layout.  I have concerns about the design of Blue Circle  unit which embeds the circuits and outlets in a 5 inch metal tube that is filled with silicon for improved  isolation against vibration.  

The review claimed that the unit gives off a pungent odor because of the silicon crystal insulation.  I am not sure that is not a health hazard along with the  potential  toxicity of the silicon.    Need some feed back about the effectiveness of both products, and the bizarre design and build of the Blue Circle unit.    Thank you