Finding the best site from several Matrimonial sites available on the internet is hard. Most of the Matrimonial Sites look the same by their Functionality. The only difference is the Quality and the Size of the database. You cannot see the exact numbers of profiles before registration.
In arranging marriage families prefer to find marriage matches from the same community. it's very rare to marry an outcast in arrange marriages.
In the early time, Online Matrimonial Sites did not offer community-based Matrimony services. But now many sites offer Community Matrimonial Services. Example christiansmatrimonial.com, bestsikhmatrimony.com, usamatrimonysite.com all are the Community sites of NRIMB.com. Which is very popular in the category of matrimonial sites on the internet.
If you are looking for a life partner within your Religion or Cast. Best Sikh Matrimony is very popular for finding Punjabi Sikh matches in India and abroad. The reason for the popularity is that they help Punjabi NRIs living in Canada or US to find their matches.