can anyone comment on buying a refurbished camera? I sold my d40 ($305), and I am nearing to my goal of saving up money for a new DSLR. At first I had the D90 in mind, but then I started to look at the D300. Now the D300 i found from Adroma is going for 1,249 refurb, body only. Now I could get a D90 with a 18-105mm VR lens for around 1,024. Whichever camera i buy, I tend to keep this for a long time, so I am wondering which is a better buy for me?