For what it's worth, we got this one:
3000VA Mecer Axpert Pure Sine Inverter + 2x 100Ah Battery Trolley (8 HOUR BATTERY LIFE) KIT - 3000W (150-200 cycles) with the "AGM Deep Cycle (600+ cycles)" upgrade back in 2020.
No need to let me have it, the lead acid battery choice was very poor but we had no choice back then especially since I was working from home...and our load shedding was killing us (and by that I mean it forced me to have to go into the office).
Worked well (we stopped using it actively in 2023) and even still online now for our computers. I just have to remember to give a workout every few months to keep the batteries in check.
All we did was replace the (inevitably dead) batteries with BlueNovas (the difference in weight was something to behold - so light just like my wallet was at the time after buying them).
> +Quiet operation when below around 600W
> - Fans run all the time when going over that amount and can be quite loud when charging (from the grid in our case)
> ~ Decent enough config for charging rate but the WatchPower software we were using was a bit meh.
> Options for Solar but I was too lazy to bother.