Stability of cyclobutyl methyl carbocation I know that cyclopropyl methyl carbocation is exceptionally stable compared to say, benzyl carbocation. 

But I want to know how stable is cyclobutyl methyl carbocation compared to say, tertiary/secondary carbocations? Or, will it go rearrangement breaking the ring?
George Olah and coworkers have examined the cyclobutyldicyclopropylmethyl and the cyclobutylmethyl cation.

(Yes, this is an awfully short answer and I can't really provide more information on the topic.)