Which is better SilverSingles or OurTime?

Silver Singles is even more niche than OurTime because not only is it meant for over-50 singles, but its also meant for highly educated, commitment-minded over-50 singles. So its not really that surprising that Silver Singles user base is smaller, to some degree.

Are match and OurTime the same company?

OurTime is owned by IAC, which also owns other dating sites like Match.com and Chemistry.com. Of course, the Match.com connection may not be a plus for everyone, since Match doesnt exactly thrill all of its members.