the good broker is a broker which always make sure security of funds with a wide range of trading technologies.
I'm using aximtrade, they are regulated by ASIC and has segregated account for clients so your money doesn't get mix in with the business. You can check out their aximtrade review for more details
I can suggest a few reliable brokers like CMC and FP Markets that are regulated by ASIC and FCA with some of the best trading conditions. The customer service in FP Markets is pretty quick in responding to most clients' queries, even through emails and live chats.
Yes, I currently trade with FP Markets, an ecn broker with regulations from ASIC, CYSEC and also has an offshore licence with St.Vincent. It is also one of the oldest brokers active since 2005, with a quick-response customer service team, and their withdrawals are smooth without any issues.