Will post a full review eventually but since you asked, will give you the concise version
Ive been to a couple of places in both cities. Melbourne, the famous place is Top of the Town on Flinders street. I've been there once, but the choices weren't that great. Maybe it was the time of day, but there were like 5 girls waiting who were like a 5/10 or below. (its an open bar area type of place where you see all the girls at once). Two other punters were just sitting around, waiting for a hot girl to show up. I was just about to leave when a hottie walked downstairs after finishing her previous session. Honestly she wasnt really my type, but objectively she was like a 7+/10. I could see the other two guys perk up as well so I quickly snapped her up

Funnily enough, as i was walking out after my session, i saw another girl that was a solid 9 and totally my type so karmas a bitch i guess
The other place is called Le Boudoir, which is like a 5 min bus ride from the CBD. That place has much more classy decor, like a french boudoir (as opposed to TOTT which literally had red lights in the room). Here the girls will come greet you one by one as opposed to an open bar. When I went there were two girls unfortunately, and one was in her 40s, so i just went with the younger one. She wasn't bad. Maybe 7/10, and the gfe was decent. But again, as I was coming out, I saw another 8+/10.
Both places seem to have pretty decent girls, but its the luck of the draw. Theres a place called Jevou which seemed interesting (you dont even get to pick the girl and its really expensive, but apparently they are hot) so if anyone has been, hit me up. I might give it a try next time.
Ive been to ATMC in Sydney as well more recently, but might do a porper review for that.