For me the Remora is THE small bag ,old yet still beats the rest for my needs. currently has a makped bottle holder great combo,my wifes EDC has been this for maybe 4-5 years. Medium is my rush12 ,also got the 24 but while on paper there is little difference in the flesh there is. the 12 is a good size while maintaing a slimish profile,the 24 is to much for me EDC Large is my overboard dry bag,its not that big but its as big as im hapyy to go for EDC. waterproof & can go down to half the size of my rush12 or full size,so very flexible to my needs. I will pop some pics up this weekend.