I can recommend
www.e-ra.biz (Oz Migration) they have very different service offers, which allows you to decide on your needs and budget (the following is taken from their website)
The Desktop ($1500) service being an online 24/7 resource, packed full of information, recommendations, Checklists, Notes, Links and
DIY simplified visa application service, saving thousands ($000s) on the immigration process and visa applications – there is also a
2 hour review built-in of a persons application, prior to lodgement. This service is available for up to four years to the user (once Joined)
which supports the person completely through the transition of the move, during and after (settlement) as required.
The Premium service is using highly qualified lawyers/migration agents (fully registered with MARA and resident in Australia)
assigned to fully assist the person/s with the visa application process at very competitive rates.
Regards
Jade