Have had the D50 since '06; have Nikkor 18-55mm f/1.3-5.6G AF-S, Nikkor 70-300mm AF f/1.4-5.6ED, & Nikkor 50mm f/1.8G AF-S lenses.. so, I've heard from (2) pro photogs that the d200 & d300 can get the "job" done... just as well as the d3 or d7000. I've read so many reviews 'til I'm blue in the face. Just attended workshop where Canon 5D Mark II was used... but, I'm a NIKON girl; I haven't purchased anything other than NIKON, including all (3) point-and-shoot(s) I have. And, I "shutter" to think anyone I know(who has been around me for any length of time) would purchase anything other than NIKON. Also, my budget's tight; I'm, heavily, considering purchasing a Refurb by Nikon through Adorama... if possible. So, with all that in mind, I'm looking to my Nikon peers for advice.
BTW... what size Expodisc Neutral Balance Filter would you recommend? ...go ahead with the 72mm or 77mm?