Mini Split AC Heater Brand Recommendations

[Kendall Miller]

Hello,

I am considering purchasing a mini-split AC & heating system for an outbuilding (bedroom) that measures 24 ft x 15 1/2 ft. I think a 12000 BTU unit would be suitable for that size room? I found some new mini-split systems available on Offerup for $450 - $640. Brands are Gree, Mirage, AUX, B Air, Midea, Frikko, Everwell. 

I have never heard of these brands and wonder if anyone here has experience with any of them. We found a Pioneer brand for about $820. A heating and air conditioning company told me that they install Daikin brand. The internet shows that Daikin 12000 BTU minisplit system sells for about $880. It says that it has a 10-year parts warranty.

I don't know the first thing about mini-split systems and would greatly appreciate any opinions on whether the cheaper brands are good or if it would be worth spending the extra money to get a Daikin or Pioneer system.  Thank you in advance.