Hi all, I'm in search of my next bag and I come to you for advice. I'd prefer Lowepro but I'm open to other suggestions. What I'm looking for is the smallest shoulder bag that will hold a Nikon D90 with grip and 18-250 lens (similar in size to the Nikon 18-200). 6"H x 5.5"W x 8.5"L Some room for other miscellaneous would be OK but not necessary. Thanks in advance!