Myryad MA500 vs ATI 1505 ?

Will be used for CENTER/SIDES/REARS. The ATI 50 w/ch more power for $300 less than the Myryad. Which would you choose and why?
Dont know the Myryad but have the 2 ch version of the ATi. It has never had issues with power even wehn blasting loud rock like GovT Mule, Lynyrd Skynyrd etc. I also know that ATI amps are used by alot of pro installers for industrial settings. I have had 2 of them and both were great.