Hi Tim, Looking for System 2 (inverter) for resale 3-rm HDB (2 x 9000 btu). Please quote for following brands: 1. Mit Star Mex 2. Mit Heavy Ind. 3. Panasonic 4. York 5. Any other recommendations (inverter or non-inverter)? Please provide details of all piping/materials/accessories used and itemised costs. Thanks!