Well I just tried a few things - plugged straight into my MarkBass - split the two channels so I could alter EQ independently - used the onboard reverb

couldn't get it sounding good - sounded very "thin" however I changed it.

I then tried the mono output, through my zoom effects, adding some compression and EQ, and a little reverb - sounded much better.

will stick with that for now - and maybe for my studio kit get the guitar rig 5 when it is released..