Inverter is the way to go. Those who says inverter needs xxx hours to save cost or throw if rosak are those uninformed idiots.

To repair inverter is the same as non-inverter. Spare parts are available as per normal.

Inverter is always power savings compared to non, yes in detail, the inverter unit will cost some overhead in power consumption, but it is miniscule and it will pay off during usage. The only situation where its more consuming, it would be you undersized the AC causing it to run at max power all the time.