i would suggest the aquamist hfs-1 - because its just damn hard to beat for the price

- the pump used in the hfs system is not one use by everyone else. this pump does not use a "on-demand" switch to regulate pressure but triple pressure regulating valves within the pump head. Note in the video the initial movement when the 150W shurflo/aquamist starts, then it purrs away maintaining @125psig. The "on-demand" pump switches the pump on/off to maintain pressure...imagine 0 throttle/full throttle action...
Also by doing away with the "on-demand" switch on the top of the pump head, a potential source of leak is eliminated


http://media.putfile.com/pumpjump

-the rest of the components...



notice the attention into even the most minute detail...its a system that you want to show off in a car show, not one you want to tuck away in the cubby hole on the left side of the trunk

this is my hfs-1 setup



-the failsafe gauge



when setup after the car is tuned, will detect injection faults before the onset of high afr/egt. i have been using the same dds3 for almost 4 years, went from my viii into the ix. Richard sent me the new style bezel to replace the older chrome blingy style

this hfs-1 is easily upgradable to the ultimate IDC based hfs-5 injection system with the addition of the High Speed Valve/FiA2 if you decide to go that route

there are a lot of systems out there, do your research on different systems/ mode of injection delivery/ quality of components/ technical help with the system and even the science behind WAI and do not just go for the best deal