I had an OEM Type R LSD in my old '94 Integra and I have an OPM LSD in my '91 ITC Civic.

Two different cars I know, but I can say that I feel that the OPM unit is much more aggressive than the OEM. You can really feel the OPM unit shifting the power while I sometimes wondered if the old OEM unit was even working.
I prefer the more aggressive of the two.

JMO.