I use the Eleven Rack but am interested in this for practice.....just jamming at home and maybe making some demo's using the drums, and also late night headphone practice: so I have a few questions: How are the drums....do they sound nice, sit well in a mix.....are there some simple, more basic patterns in there? How is the amp modelling/cab/OD modelling........it says the GT-10 engine but did they improve the sound at all or does it suffer from the dreaded CW syndrome? I'm thinking also of plugging my eleven rack into the line in and only using the BR-80 for drums, backing tracks etc....will this work? Or can you only "jam along" with the 1/4 inch guitar input......using the Line in would allow me to use stereo effects on the 11 rack...... If I can't use the line-in to jam along......do the levels work out OK plugging an external unit into the guitar input jack and leaving all of cosm off..........in other words....how and how well can you use an external unit with this thing?