Need UPS recommendation

[BuzzingBee]

I currently own Cyberpower BRICs LCD 1000VA/600W UPS, but when I upgraded my PC early this year it turned out my UPS is lacking wattage and failed to provide battery backup as my system was pulling too much power. So I am looking for new UPS recommendation.

 

My PC has 3900X CPU and RX 6800XT GPU, and my power supply is Seasonic Prime Platinum 1000W. When gaming my power wall meter is reading around 500W. I would also like to connect a monitor (AOC CU34G2X 34 inch ultrawide) and a TV (LG C1) to UPS. Let's assume both of my screens consume 200W total so overall power is 700W.

 

For most situations in our household we may accidentally trip overcurrent protection when using too many appliances at once.  Also brownout may occur from bad weather.

 

Basically I just need a new UPS to have time to save game or program and shut down PC in time, say in 5-10 minutes. I need some recommendations just enough to do its job. Budget is not a concern, and I don't mind paying more for any justifiable reasons, for example pure vs simulated sine wave. 

 

(I live in Australia, so some recommendations may not be available).

EDIT: Incase someone found this thread, I ended up buying PowerShield Commander Tower 1100VA / 990W as my PC's power supply is active PFC which require UPS pure sine wave.
CyberPower PRO 1000VA / 900 W was a contender but given both were at same price of $500 AUD I chose the one with higher capacity.