Injection kit from WA. Any good?

[ytt105]

Time to make a decision on which kit to fit to my 2000 P38 4.6.
Contenders at the moment are an Australian distributor in WA selling an NGV system and a German compay selling an ASG system
Obviously I have no knowledge of either of these kits so defer to the wisdom of the forum.
The NGV system has NGV convertor, RAIL injectors, AEB ECU, costs $700 delivered from WA.
The ASG system has a Tomasetto convertor, Valtek injectors, an ASG ECU, $665 delivered from Germany.
So far I'm intending to go with the Australian supplier just for 'local' backup.

[ytt105]

This is the link to the NGV system.

This is the ASG system.