Michell Technoarm vs Origin Live Silver vs ???

I recently imported a TecnoArm from Stone Audio in the UK (saved me around $300 over the best price I could find domestic...) and am astounded at the fit, finish, and performance of this arm.

It blows away the Rega RB 250, 300, 600, and 700's that I've run in prior years. I've got it mounted up on a Michell deck and it's BY FAR the most engaging arm I've ever run - simply amazing...

Slate1, the TecnoArm sounds very similar to the Brit Audio SE version mod of the RB250 and RB300 arms. Have you any opinion of these arms?

Michell techno weight and origin live structural weight...which is better

I've been looking at the counterweight issue for my RB300 lately and there seem to be quite a few options.
1) Michell Technoweight, including cart head weight adjustment
2) OL structural modification, mostly to replace the plastic stun of the RB250 with a metal one and add a different weight
3) Kerry F2 titanium counterweight. Its hole is off centre to lower the gravity point
4) Groovetracer counterweight , about same as above
5) Pebbles counterweight set (incl. stub)
6) Clearaudio Turboweight (I have already ordered this one for my RB300)
7) Expressimo counterweight (similar as above 3,4,6).

The prices range from 50 euros (Pebbles) to 170 Euros.

anyone here have the idea which one is better between michell techno weight and OL Strutural weight

TQ