Nothing will beat an XM108 Michelin for grip, but they're not being made for the past 5 or 6 years. When I was looking for low profile tyres for the 110-90 I couldn't get them, I would have even bought second hand ones if I could have found a decent set.
I went for Multibibs instead and have no complaints so far, they grip well and don't tear the ground when doing sharp turns which other new tyres would do.
I'm told that Kleber are using the old molds for the XM108s?
I know a local man replaced a set of 480/65 R24 and 540/65 R38 Michelins with the Klebers last year and he is happy so far with them.
He also recently replaced a set of Agrimax (which he said he'll never ever have again) with a set of Michelin Multibibs on a TM165, I think they're 480s and 580s. Also think there wasn't much change out of £5,000.