Been jumping around a few different sites lately trying to find one that doesn't feel like the same recycled lobby with a new logo slapped on it. My rough take: the decent ones usually aren't the ones yelling the loudest about promos, they're the ones with a proper mix of games, load fast on mobile, and don't make you sift through heaps of rubbish first.
For me, the better spots have a solid spread from the usual providers like Pragmatic, Play'n GO, Hacksaw, NetEnt, plus a few old-school style reels and decent jackpots chucked in. If a site is nothing but copy-paste high-vol stuff, I get over it pretty quick. Also love when you can actually sort by provider or feature without the whole lobby feeling cooked.
Big thing for Aussie players too is how it runs day to day. Fast deposits are nice, sure, but if the games lag, support goes missing in the arvo, or a cashout turns into a bloody mission, that kills it for me way faster than a weak bonus ever would. Same with sites that look mad on the home page then feel dead once you start spinning.
Right now I'd honestly take a smaller library with genuine quality over some giant lobby stuffed with filler. Keen to hear what everyone else reckons though — which sites have the strongest pokies range lately, and which ones are mostly smoke and mirrors?