I use pro amps (Crowns). I'd use a QSC any time, tho. The only consideration is does the connectivity match up to your needs and possible fan noise (I don't know about these QSC). Ask
@Verdinut how he likes his QSC (different series, DCA if I remember correctly). Can be a greater value than consumer amps and with a better feature set....but the boxes tend to be on the fugly side