Planning on purchasing an Eleven Rack unit in the next couple of days. A few basic questions for those with experience: 1) If I purchase a new or used unregistered unit, will I receive a free upgrade to the expansion pack and latest version of Pro Tools or is it slightly more convoluted than that? 2) Does the unit still sound decent when played at low volume in late-night situations at home (without headphones)? 3) Any particular recommendations for an affordable cabinet to pair up with this thing? Thanks!