The AU bassline is great :) I love it.

I've used it live as well once controlled with knobs and it sounded SHIT. But thats because the system was SHIT :(

But AU Bassline sounds great :) AND the sequencer is true to the original, which is as much a part of the "sound" as the filter.

Muon Tau is great for computer bass sounds but it doesn't have that same feel and sound as the AU bassline when it comes to reproducing the 303.