Solar energy provider recommendations please

HI there,
Instead of paying $200 bill per month, I'm thinking to use Q card to finance a $30,000 solar energy system.

There are so many options, everyone who has installed solar so far is probably an early adopter, which means you probably won't know how long your system could last for. But just out of curiosity, what are some of biggest market share for inverters and battery in NZ?

Many of the batteries offer 10y warranty. Is discharge cycle the most important factor for battery life span?

Thanks