I like the LowePro Sport 200 for striking the right balance across a few dimensions:
- very light weight
- roomy and flexible (not huge, but I can fit a K-3 with any of my lenses attached, including the 200, one medium-sized lens (like the 55-300 or 17-70) and one-two primes in the main camera chamber, and then put my flash and/or a couple of other lenses in the general chamber (which is not padded);
- the main camera chamber has good padding and I like the side entry, so I can slip one backpack strap off my back and pull out the camera or a lens);
- there's room for other stuff (accessories, sweater, lunch, etc) in the main chamber;
- I can put an 11" skinny laptop, a tablet or something similar in the water bladder in the back (I also use that space to hold my passport wallet and sometimes my regular wallet when I'm travelling somewhere a bit dodgy);
- it can hold a tripod;
- it has a cover if there's rain;
- the straps are lightly padded, adjustable and comfortable, and there are small pockets in the straps at waist level (not big enough for a wallet but there's room for things like a lens brush, lens caps, a couple of credit cards, etc);
- I have a bad back and I find that the backpack fits me well and does a good job (when the waist strap is used) of lifting the weight off my shoulders;
- Price is quite reasonable, too.
Lowepro | Photo Sport Series Camera Backpack
The only thing I don't like about it is that it's a bit too sporty looking for my taste (black or orange with white accents).
I've also got the sling bag that's one size smaller and I find it a lot less comfortable to use. The one thing that's great about is that it's very easy to travel on a NYC subway with it because I can undo the strap buckle really easily to take the bag off when I sit on a crowded subway and put it back on again.
There is now a bag that is one size larger than the 300. It would be too much for me but would be fine for some.
Last edited by frogoutofwater; 02-04-2015 at 08:52 AM.