Hi looking for some all across the board info. on a mini split system from HVAC contractors,subs or customers that have this system? prices to expect,best system out there, how many sq.ft. does a single indoor unit cover,. I mean are they as great as these ads and sites make them out to be? etc,

I want to cool and heat 585 sq.ft. 2 bdrm. 1 bath. ,so all rooms are rather difficult to get equal heat or cool air too with the layout plan with one big window unit or several. Plus efficiency factors with a split like a central system would be great too. Some ads I have seen say these split systems are perfect for an addition of 500 to 1,000 sq.ft. ,or a supplimental heat and air source to your current central system should you find more heat and cool air is desired.'