turntable mat : boston mat, audioquest sorbogel ma


I spoke to some turntable dealers regarding tweaking there turntable with the above mat. Some are positive about it and some felt that the original platter mat sound characteristic is what the designer intended it to be. what is your opinion?
128x128audioblazer
I have an original AQ sorbothane mat (20yrs old)...it never leaves any residue on the vinyl and I use a clamp.  I understand the new formula may have issues.
Boston Mat on a 401 robbed the music of essential air and life. Back to the original rubber.
The ORACLE Groove Isolator beats all hard acrylic mats I have experienced, on 4 different ORACLE Delphis and one Goldmund Studio. Hard acrylic spoils everything.