Quality of craftsmanship was superb - fit & finish is as clean as stock, if not better. Only thing that was difficult about the install was the u-bolt style clamp between the front & rear sections. If I didn't have access to a lift and air tools, it'd probably be more difficult.
As far as interior noise - minimal drone. I can't hear it over road/tire noise (Still running stock wheels/tires) and the a/c fan. If I turn everything off and am on some smooth road, you can hear it - it's soft, but it's there. Hell, it might just be me, but it sounds more quiet than stock from the interior.
The dual tips fit with the body lines a bit better to me - I've never been a big fan of the coffee can exhaust tip. I'd say this is the setup to go if you're going for a sleeper.
Having had a Magnaflow on my MZ3, not having an obnoxious drone is a big plus to me, as it passes the "Does the CBE irritate the wife/S.O./Sexual Acquaintance" test with flying colors.