u/Applewood3

I’ve got a 900sqft metal building garage/shop/hangout that’s ready for heating and cooling in the south east…I keep seeing a bunch of horror stories on here of MrCoolDIY, temps running all over the place, units dying within a year and poor warranty support…but all seem to be large multi zone units for in home…I’ve been suggested a 36k dual zone unit for the shop which is completely open 900sqft with 16ft ceiling. Is it really a problem? Is it a gamble and QC and overall quality just ain’t the best? Or is it truly worth paying 3-4x more to get a pro install?