I’m running the XM481’s on my long travel 29er and Arch MK3 on my 120mm 29er, and am very pleased with the new Arch’s. I’m about 86-88kg in full kit and like a bit of rocky and rough trails and have no bother with them. Have tried the DT’s on the short travel bike, but they just dull it down a bit for my taste – good for smashing along on the bike bike though:)
Tyre-wise, I’ve found chubbier 2.35’s, such as Magic Mary’s suit either rim width well, but Maxxis Minion 2.35’s feel a bit odd and quite draggy on the DT rims (good on the Arch though). Oh, and if you go with the Arches and want to bomb proof them a bit, I can strongly recommend sticking a Mavic Charge/Quest XL tyre combo – the Charge is an excellent front tyre for a bit of hard charging in rough stuff.