My experience (here in the states):
My heat/air guy who has installed hundreds of these systems informed me they all have the same parts and are possibly assembled at different locations and then stickers are put on them to differentiate the brands. So basically they are all the same or at least have identical parts so finding parts I would assume would be no problem.
However the difference comes in the warranty department. My particular instance I bought an EMI system (off brand same as yours) and had a bad PCB board on the outside compressor unit. When we called the company tech rep. the first thing he asked was the voltage coming from my disconnect, which was 242 volts. He immediately said too much voltage and the warranty was not honored and that the high voltage had caused the board to malfunction. The s[ecs on the system do say it is a 230 volt system, but all 220 volt outputs are 2 legs of 120 volt so outputs everywhere will be 240 at least, and I assume they rate it 230 so that they will not have to honor the warranty.... grrrr.
My AC guy was kind enough to claim it under another system he installed (a Mitsubishi) and got me a new board which has worked fine for months now. Bottom line... the savings may be offset by lack of warranty but I would think the parts issue is a non factor. I did notice yours is a 220 volt system so this is something to consider, not familiar with voltage levels down there
