I second the research point. They're researching you, right? Why not do the same? Early on my company was talking to a VC. We weren't sure we wanted money, but

I second the research point. They're researching you, right? Why not do the same? Early on my company was talking to a VC. We weren't sure we wanted money, but we did want to explore the option. We called up a few companies in the VC's portfolio to ask about their experience and the information we received was incredibly useful. It ultimately helped us make our decision.