They often get pigeon holed as 'dead' and 'muddy' or lacking sustain, clarity - not always detrimentally. However I have found that my Mustang with rounds sounds super 'alive', piano-like, with tremendous clarity and punch. I sold a Celinder J-Update because of how much I like mine. They're cool. I think the neck on mine is fantastic, and although the lighter weight is welcome on my (perfectly fine) left shoulder, my right shoulder does have some nerve damage and I think the smaller body and hand position is more comfortable.