Tamrac Bag Quandry

[kitjv]

Here is the situation: I need a compact travel bag capable of holding the following basics: a Canon 400D w/ EF 70-300mm f/4-5.6 IS USM attached, a Sigma 17-70mm & a Speedlite flash unit.

I am considering the following candidates: the Tamrac Zoom Traveler 3 & the Tamrac 5603. It appears that the basic difference between the two is size. However, both appear to be able to accommodate my needs.

I would appreciate hearing from those who are familiar with these bags as to your thoughts & preferences. As you all know, the last thing that I need is yet another gear bag that doesn't quite fit the bill. Thank you kindly.