Friends with Haven’s have had issues with the freewheel mechanism and the bearings, and when I ran Crossmax wheels they spent months at Mavic for broken spokes, rims, and cracked hubs (old versions of the wheels but I still bear the mental scars of being without my bikes… I’m much happier if I can get the parts and fix my own stuff… or send to someone in the UK who is great with warranty/service).
For a budget of about £500 I would buy two pairs of Hope Hoops with Flow rims… one for my hardtail and one for my FS… then I can run different tyres and swap the wheels back and forth as I like/need.
Which… funnily enough is what I’ve done. I could go Arch (EX?)on one set to drop the weight further but I’m addicted to big tyres so the Flow rim works for me. I need to replace the front rim on one set sometime as I’ve bent it but at least with two sets it won’t keep me off the bike.