I'm trying to buy a bag that is larger than my cheap Canon $39 model that is carry on friendly yet large enough to hold my gear. I'm not going to spend $300 on a bag, which is why I want to choose from these older models that can be had for ~$100
My gear is gripped 5Dii, 70-200 2.8 IS, 24-105L, 300 f4L, a 1.4 converter, and an 430EXii flash plus hoods. Right now this stuff barely fits my bag and I want to add a few primes in the next year. I also want to be able to place my laptop (Dell 15") in the bag so I can use this as my carry on bag on a trip next month. (will probably leave the 300L at home)
In trying to find size info, I am not sure if the AWII version of the nature trekker is larger than the original AW, or which is larger between the Pro Trekker and Photo Trekker. Basically just want the largest bag that will fit on a plane as a carry on. I've looked at the bag stickie at the top but that list doesn't really cover the three I am looking at. Any help would be greatly appreciated.

