Commuting rucksack recommendations? Looking for a better quality version of the stubble and co rolltop

I've had the stubble and co rolltop 30 litre for almost 3 years and all the zips have died (they just seperate themselves). So I'm looking for something similar that is better quality. Any recommendations? I'm considering Antler urban light or Cotopaxi Allpa daypack. Any experiences with these?