Just got home from lovely Crete and will enjoy some more music tonight

Should I get the 3 mm Techncs mat and what can I expect if I put a rubber mat on it. A friend of mine bought a Auditorium A23 mat for his Rega P9 and is very happy compared to a Rega felt mat he used to have... Or shall I just forget about mats and enjoy the ETP as is? I don't want to spend alot of money triying mats all over again. I would rather spend that money on the bearing base plate.