Hello all. I finally have enough upcoming gigs/weddings/etc that would warrant (and also pay for) some upgrades to my current equipment. I have been picking up some nice pentax glass, enough so that I would now really hesitate to look into investing in another line. So, I was thinking of using the DS as my backup and getting a k10d for my primary body. Those of you who have it, would you recommend the battery grip or no? I would really like one, but $150 seems steep for it. Also how good is the battery life? I was disappointed to see they got away from the ability to use AA or the CR V3's. How many shots can I expect to get from a charged battery. Any other must have accessories for the k10d?