After my water bladder slipped down inside my daysack, and the raincover blew off last week on Blencathra I have decided to replace my Kimm sac. However I may be setting my sights too high. I would like zipped pockets on the hip belts, an internal bladder pocket and a sewn in raincover, around 25 - 30 litres and about £50. I can find several sacs that have two of the requirements but not all. Advice please. Ta.