I think it depends on the entrepreneur on how much involved and close you want to be with your VC. Some of their operating partners - Keith Rabois, Ben Ling, Mark Jung, Flo (recruiting), Mojgan (PR), etc. are big resources to leverage on. I'm not trying to evangelize the firm in any way here but just putting it across that there are pros & cons in every VC firm and it boils down to what the entrepreneur actually wants. I have personally met entrepreneurs who just want a high valuation, that's it. The need varies.
Every entrepreneur's goal is to make his/her company successful and if the odds are high in getting a particular investor on board, then do it.
Btw, I think there are a lot of YC companies after our batch which raised money from Khosla ventures - instantcab, instacart are the ones on top of my mind.