I loc in a park about 15 amps master DL 800/1000/1200/1800 / 3K6, from now on some good 5 years and no flush worry!
If A has a hand dl 1800 or a cot burn but the master is taken in guaranteed even sent me a new one !!! All in a week there some dealer who should take a leaf (eg Algam distributes crest or scv to crown).
To my taste a master sounds much better than a crest or a qsc a 2 ball of range.
If you want an amp a bit more expensive with better dynamic turns you toward the 4020 or 4040 and then live to the type of yorkville camco series tecton or vortex;