Which brokers do you recommend for SPAN margin account ?

I have heard great things about your course from one of current subscriber . My current account is with TOS.
I do not have a PM account. around trip for SPAN margin at TOS is not cheap.
Before committing to purchasing the course I would like to ask which broker would you recommend for SPAN margin if I want to use /ES for trading ?
I you can provide names of the brokers, I would check with them if they accept international clients.