Well today I ended up buying the Soundstream INT.2BX http://www.soundstream-aus.net/signal_processors.html
I wanted something under $100 and I think this is going to be as good as I can get. To top it off it comes with the remote sub level control. I'll keep you posted if I run into any problems or am unhappy with it......Not worried though, think it'll work out fine.
I emailed them asking if it compares to the AudioControl LC6i and this was their reply:
"Yep, thats spot on mate, the INT2BX will allow you to tune bass frequencies that have been 'shaped' by the factory system and restore them to a balanced aftermarket set of 3 pre out pairs for you amplifiers and also adds a Bass controller :)
Yes, it was Soundstream Australia. Could you tell?