I know, I know. It seems like there is a backpack thread here at lest once a week. I have read through them, gleaned what I could, but I'm still left with questions.
I currently have a Lowepro Nova 200 AW shoulder bag and I LOVE it. It was like it was made for me. I wear it across my body. My tripod sits on top with one leg through the handle to secure it. It's so simple to change lenses or filters when you knee deep in a river or other precarious situation just by swinging it around and opening the flap. It even acts like a little table. BUT, I'm having some issues with it.
As my Nova gets heavier, it's beginning to wear on me. Wearing it on one shoulder for 5-10 mile hike is becoming painful. Plus, I can't carry some non-photography essentials such as water and first aid. I've had some close calls lately... So, I would like a backpack to evenly distribute the weight and allow me to carry more gear. This is where you guys come in.
Here's what I need:
1) Budget is around $200. I don't mind going to around $300-350 if it's an incredible pack, but I'm not a label whore. I buy quality, not status symbols.
2) It must have some space for non-photography essentials such as light snack, water (either in a bladder or canteen), small first aid kit, trekking poles, etc. I don't need room for camping supplies; just the basics.
3) I don't carry a lot of camera gear. I carry a 50D, 70-200mm F/4L, 17-40mm F/4L, and a mess of accessories (filters, lenspen, CF cards, etc). I would like to have a little room to expand in the future. For instance, I plan to purchase another lens (macro), teleconverter, and possibly a Speedlite. I always take a tripod. It's a Manfrotto 190CX3 w/ Manfrotto 498RC4 head. Not a monster, but not exactly compact, either. I would consider selling it and purchasing a fancy, compact travel tripod if it's going to be difficult to find a bag that will work with it.
4) I'm 6'7" 330lbs. I need a bag that is comfortable for a big man. I saw a guy on a trail last week with something from Lowepro that looked like a Hello Kitty bag. It barely covered his shoulder blades. That's not going to work for me. Besides looking ridiculous, I imagine it would be very uncomfortable. I'm not use to wearing backpacks, anyway. Comfort is important and I'm not afraid of a large pack.
Thank you in advance for your help.

