6 foot folding table that I bought at Wal Mart. Cosco brand that was $38.99.
Black DJ Table Cover that goes to the ground on Ebay. $24. White table cloth that I got from Amazon. $13.
I also have a 2 4' tables in my storage. I bring one for wedding ceremonies.
About half the events I do does have a table provided for me though. If I don't have to bring the table in and out of the venue, well that is one less thing I need to bring in. BUT, I only do that as long as they are providing a 6 foot. OR, if it's this one venue, they provide a slim table that the DJ has to work with because space is so limited.
If you are a DJ performing private events, you should own, and bring a table.