The LeSport Sac everyday bag: http://www.lesportsac.com/store/7507_5205.html

Foley and Corinna, but I'm not sure their quality is lifelong - its good, but the leather could wear better IMO.

I have this one by Patricia Nash and I love it.
http://www.patricianashdesigns.com/shop/talla-top-zip-pink?cjm_useimages=No&color=Pink
Have no idea why the website says it's pink, I have this color and it's absolutely red.

I bought this one for Disney World and I think it would work for you: http://www.zappos.com/overland-equipment-donner-red-violet-plum-smoke-print?zfcTest=fcl%3A0

The water bottle pocket is a really good size and even held my insulated Camelbak bottle (which doesn't fit in my car's cupholder).

I just bought this and really like it: http://vip.zappos.com/baggallini-colorblock-roundtrip-charcoal-coral?zfcTest=fcl%3A0

BUT, I realized that it's not large enough to hold what I need, which is my wallet (I'm not 100% comfortable with keeping my cards/cash in the built-in pockets), a somewhat bulky bag that holds epi-pens/Auvi-Qs and Benadryl, my phone, hand sanitizer, and sunglass case, plus other assorted items like safe treats for my food allergic kid, etc. I used to have an earlier version of this bag: http://vip.zappos.com/sherpani-milli-le-jade-black?zfcTest=fcl%3A0 and it was the perfect size to hold all of the above, plus a bottle of water and more. I just don't care for the current versions, hence my search for something new.

Anyone have any inexpensive (under $100) ideas?