DLSR Sling Bag - Your opinion is appreciated

Hi all,

I am shopping for a sling bag for the following gears:

- Canon 60D + battery grip + EF-S 17-85mmm IS USM attached to the body

- EF-S 55-250mm IS telephoto lens

- EF 85mm f/1.8 prime

- Nissin Digital Di622 Mark I flash gun

I am thinking about one of the following sling bags:

- Lowepro Slingshot 102AW or 202 AW

- Manfrotto Agile I

Which one do you think is a better bag? If none of the above is your favourite, can you please provide some insight about the sling bag you use, i.e. why do you choose it over other choices? Please limit your suggestion to sling bags, and better if you are actually using one (so you know what's good and what's not)

Thanks for your opinion!!

Alan