Any good?

Looking at changing what have been totally reliable and pretty much bomb proof a Mavic Kysrium sl alloy rimmed clinchers as they are getting a little worn.
I’m tempted with a Pair of Prime RR 38 V2 Carbon clinchers currently on clearance offer with Chain Reaction at £419.00.
I ride in a very hilly area and would appreciate any constructive comments on the reliability of these as dependable climbing/ descending wheels?
Thanks all.