TheChamp
Honorary Master
That is one argument you really don't want to start.why not get a Hybrid inverter with an integrated MPPT? You've been quoted R40k for an 8kw inverter + MPPT. You could get 2x Growatt 5kw inverters which have integrated MPPTs for around R25k.. or am I missing something?
I still think the best bet is to buy everything yourself and then get an installer to quote on the job, sometimes these all in one quotes are madness.