Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
I'll put a vote in for duspeed, mine hasn't sucked up a filter or fouled up a sensor - plus it looks awesome.
Steve is a great bloke, I've currently got a remote Autocal tune with him and he's been nothing but awesome. Really really fast on the tune updates, most of the time I send him the logged data and he'll have the revised tune back to me in 2-3hours. I've sent him data at 10pm once and got the revised tune back by 11pm. Once the I've done a few more km's in the Maloo I'm going to try and book it in for a Stealth II cam package.
Thanks for your comment, I get the impression they are on top of there game.
Its now between OzTrack, KPM, and HPF. Should know by next Saturday. Pictures and video to come.
Cheers