Hi pal and welcome to this site..,Its no good me trying to tell you which sac is better than the next , as youve got to check em all out via the research thats already been done on them and just compare which would be better for you and why...i,e... low weight of sac/back frame science/floating lid/hydration compartment/outside pockets,or not/material/does it come with rain cover/ and so on and so forth.., its best to actually try them on first and see how they feel on you, But thats not always possible especially if your checking them out on the internet., but you can make very good judgements about different sacs if you do your homework on them without trying them all on, anyway happy shopping and let us know what you do decide on.