For heavy duty long-life and insanely high inverter draws it's not only tough, it's impossible to beat a pair of Lifeline 31 batteries. The initial price is high but lesee the tenth year on my 31XT is coming up and it still shows 97+% capacity.
I have to load test maxed out at 500 amps to make the test useful. At 200 amps the battery is a shade less than 12.1 volts but drops into the very high elevens. A pair of them would make a cup of scalding coffee jump out of the microwave and head on down the highway.
But some folks like settling for Chinese batteries. Reminds me of saving ten dollars on the price of a coat and being almost warm for half the life expectancy of a warm coat. Go figure.