I have a [url="http://www.korg.com/gear/info.asp?A_PROD_NO=AmpworksB&category_id=6"]Korg Ampworks Bass[/url], which (I think) really sounds great in a home studio setting. Not the most versatile unit, though, and it would be pretty limited live, since the footswitch socket only lets switch between your saved presets - both of them - and manual. The presets sound great, and I always find myself dialling back the effects, but at least there are knobs for everything.