I bought a Thule Crossover eight years ago and the zip on it has finally gone. Short of getting a local seamstress to fit a new zip, I think it's time for a new one, and am a bit tempted by the Thule Crossover 2 30l. Are Thule still good? Is there anything else of the same sort of size that I should be considering?
Do you hate money but love backpacks? Then check out Hillpeople Gear. I have a Connor, but Umlindi might be up your alley. They're not light backpacks, but they're sturdy and the load bearing system is second to none. Super comfortable even without a hip belt.
Also check out Mystery Ranch. If you can find a used one that's be best, but even after getting bought by Yeti they still make really good shit.