In evaluating our new MH (yes, we went with a tag), we drove several tag and non-tag coaches. I understand the weight carrying argument, but for us it was all about ride comfort. With the engine weighing about 2,000 lbs and located several feet behind the rear axle, this cantilevered moment arm creates a lot of pitching as you drive along anything that's not a perfectly flat road. It is uncomfortable and also must be constantly loading and unloading the front axle, maybe contributing to the wander and need for lots of steering corrections. With the tag, the ride is a lot smoother and the coach stays where you put it - a lot less fuss, almost like it's running on tracks.
Roger & Judith
2017 Newmar Essex 4533, Spartan K3 chassis
2019 GMC Yukon Denali, Blue Ox, Air Force One