I tend to see 2 or 3 regs regularly, lol, as I really don't enjoy the uncertainty of meeting new wg's . I like knowing that I'm going to get a consistent experience, and that we both know what works and doesn't work sexually for both of us.
But, I also try to meet a new wg at least every 2 or 3 months, usually well reviewed ones on UKP. This let's me identify potential new regs if any of the current ones retire or I get bored of them (which rarely happens).