GoRuck GR-2. I got it used on eBay for 1/2 price (used in this case isn't a big deal because these things are bulletproof and last forever). It's great because:

GoRuck GR-2. I got it used on eBay for 1/2 price (used in this case isn't a big deal because these things are bulletproof and last forever). It's great because: * It has a laptop sleeve * It's big enough to pack for I'd say 3-5 days * For the day-to-day I can also pack all of my gym gear (shoes, belt, wraps, clothes) * It's so heavy duty that you'll never have to worry about it breaking down (and if it does they have a guarantee for repairs)