Thank you both.

Based on what I could see, VR or IS should be very helpful for this type of long lens.  Even with a tripod, you could see the vibration. 

Guess one will need higher speed (1/1000 or higher) to get a sharp picture with such a long lens. 

Also, it is a pain in the A$$ to move this thing around with the tripod. 

Paid $5100 for it with the hood and hard case etc.  I think it is a good deal.