I seldom travel by plane and do most of my traveling by motorhome so, the size, weight of my camera bags usually doesn't really matter. However, I am going on a ten-day trip to the Kenai Peninsula of Alaska and want/need a larger (carry-on legal) backpack than I have (I have the Lowepro Mini-Trekker) and that backpack must have wheels.

Since I so seldom use a large case to carry a bunch of equipment, I do not want to need to sell the farm in order to buy the pack. However, it still should be of reasonable quality and be able to survive a few trips as carry on luggage.

I plan on carrying 2 bodies (30D and350D with battery grip on the 350D), three lenses (17-55mm f/2.8 IS, 70-200mm f/4L IS and 300mm f/4L IS with 1.4x TC). I also plan on taking either my 420ex or 550ex flash (depending on which will fit) and the normal assortment of batteries, CF cards and other small accessories such as CPL filters.

This backpack with 44” total dimensions caught my eye because it seems to fit my criteria for maximum carry-on size of 45" total dimensions (height+width+depth). It is larger than the Mini-Trekker, but still carry-on legal, has wheels and is selling at a pretty inexpensive price.

Does anyone have experience with the Square Perfect SP1700

NEW ROLLING CAMERA CASE BACKPACK DIGITAL PHOTO VIDEO - eBay (item 270232112227 end time May-05-08 20:01:05 PDT)

I don't plan on filling the outside pockets during the flight because this would probably increase the size beyond carry-on limits.

If anyone knows of a similar case (preferably in the sub-$100 range) that might fit my criteria - I'd be happy to learn of it.