I used to be a fan of Aurora and have 2 pure sinewave models in my home. From a performance point of view Pure Sinewave Aurora works well, no noisy fans. But when it breaks down, their service center charges an arm and a leg to fix it. So I would suggest you stay away from them. Second issue is slow charging. It's good for health of batteries, but not good during extended load shedding.
From what I have heard APC is best. It has pure sinewave output and being APC, it is rock solid. If my Aurora breaks down, I am getting an APC.