What wheels to choose?

Hi

I am looking for a spare set of wheels (240R, current 260CUP or EXIGE Stealth).
At the moment I have a standard set 240 CUP wheels (Not 240R!).

Besides personal taste what are other reasons to choose a set?

I have seen the 240R’s are wider but what about the 260 CUP’s?
I cannot find any info about the wheels used on the Exige Stealth. I saw them as well on other Exiges on display at FOS.

Does anyone have a weight comparison?
Q.