Lets face it, they are all pretty ordinary. It's up to the serious investor to cobble together some combination of three or more service providers to get anything remotely reliable.
I remember when the US discount brokers had a go in Australia. Some quit, some had their customers gobbled up.
"We have taken over xyzs client list. Here you go, here's your new piece of crap Commsec interface, enjoy, call us if you have a problem, have a nice day".
Move to America and trade starting for a cost to you from 4 bucks a lot. "Have a nice day" Beeeeeeeeeeeeeeeeeep.