May I find out based on your experience, which of these brands less problematic & easier to service? Toshiba, Fujitsu, Mitsubishi Heavy & Mit Electric. I'm considering system 3 from a) Toshiba RAS3M20SACV +RASM10SKCV x3 (cos Made in Japan Condenser, but does it really matters?) b) Fujitsu AOAG24LAT3 +ASAG09LJ x3 Pls kindly PM me asap. Thank you.