Best Koetsu for SME V


I have a SME V with a Benz Ruby 2. I want to jump into the Koetsu club. What would be the best Koetsu to match the SME V. Some say that the "stone" ones (Jade-Onyx) would be too heavy for the V although there is now a new SME specially design weight to accomodate the heaviest cartridges like the Clearaudio Goldfinger at 16g. Anyway, any thoughts much appreciated. Anything Urushi and above. Gain is not an issue. I can go as low as .1mv
smoffatt
Hi Dgad
I am using the Urushi with the SME 312S and would like to increase the effective weight of the arm to get a better sound. I would like to seek your advise on how much weight and where to put the Bluetak at the pivot. Do you mean to put Bluetaks at both sides of the pivot so that the weight can be balanced off? Do you suggest to use the oil provided as damping? Thanks in adance for your help.
Sum
Two friends of mine uses 9" SME V with Rosewood Signature and Jade Platinum.
This is good match but in my opinion not the best possible.

I was trying Urushi Vermillion with higher mass arm - 12" Origin Live Enterprise C (21 grams eff. mass) and got very good results.
Thank you the information. I am concern about the resonance problem with the combination of SME 312S (14g) & Urushi (9g). So, I am trying the effect of adding about 5.5g more weight to the head shell by heavier screws and a metal plate.
Need sometime to test the result. BTW, what VTF do you use? Thanks.