I have several, three acquired within the last three years and none as good as the TEK-brand bag I picked off of the discount shelf at Citizen Photo in Portland in the early 1990s. Sadly, that bag is a little too tight for my K-3 and lenses, the dividers being fixed and designed for film SLR kit. I actually found a listing for a nice one on eBay so you can see why I like it.

Vintage TEK Tam Padded Camera Bag / Tote Black With Shoulder Strap | eBay
At present, I shift stuff between a larger Manfrotto messenger bag (BULKY and too much for walk-around), a partitioned six-pack cooler (works great for compact kit, but tight for camera + lenses), and an Amazon Essentials Large dSLR Bag (exceptional value, but sort of strange in actual use) (
LINK). The Manfrotto, I use if distance is not too far from the car. A plus is that it has the option of a top-rear access through a zip opening. It looks more like a large laptop bag than a camera bag; no protection there, eh? The cooler-based bag is great for city walk-around where I don't need much and where the camera can remain around my neck. It only looks like a photo bag if I am carrying the camera (duh).
Want rear access? Turn the bag around.
That leaves the Amazon Essentials. It is cool in that it may be configured for a typical two-zoom kit + flash + camera and still have room for batteries, filters, and other stuff without being overly bulky or unwieldy. Did I mention that it is also VERY reasonably-priced? The only rubs being:
- The dividers are simply hard to position in a manner that makes sense
- The inner flannel lining is loose on the padding (not stitched-through velcro), making placing the dividers cumbersome
- I have yet to figure out a comfort position for the shoulder strap
- The tripod loops are not workable. I am going to cut them off.
- The top entry involves both padded flap and velco-attached hinged padded zip lid. The combo is strange, but works...sort of.
I need to do a full review for this site, but not today.
FWIW: I also have two converted lunch bags that I use for film rangefinder outings and for my 4x5 field camera. Both work great.
Steve
P.S. I bought the TEK bag from eBay. It is in too good a condition and too good a bag to pass up at only $25 USD.