would also say siteground is crap for australians lol, man i have a whole list of servers i recommend if you're australian, seeing that you are. siteground, bluehost, godaddy, crazydomain, hostpapa are all on my list of stay away even digitalpacific is on that list.
WPEngine may look good on paper but the price is crap and the speed is worse for Australian users. So this really comes down to where you are located in the world. But generally, even some aussie servers aren't worth the price you're paying for, this is coming from a developer with over 100+ managed websites.
They're okay if you're on a static website with no e-commerce and no real functionality and your site are compressed to shits. But if your site is heavy and you are on a budget at the level of siteground i have a list of better hosting for the same price with better server, personally tested with stress loading the servers using 100+ VMs