If you've got Logic and you do live bass tracks and your not using the Bass Amp plugin you might wanna check it out. I've got all the Amplitubes including the SVX bass module, Guitar Rig 4, Peavey Revalver, and I want to like the bass sounds in them cause I paid for 'em but I keep coming back to Bass Amp. It's just got that magic sound, it's super easy to use, got some good presets and very easy on the CPU...and it's free!