There are two main advantages of the alloy wheels, in general they are lighter and more accurate. The steel wheels are stamped and are within .030 ins the alloy wheels are machined within + or - .005 of an inch. For a MH you would be hard pressed to tell the difference in the ride quality. It would be a different story on a performance car that you would race at high speeds. The forged alloy wheels are lighter and stronger than the cast alloy . When I was traveling in Alaska I hit a pot hole on a paved road and bent both my MH steel rim and my tow car steel rim. I was able to straighten both out with a hammer. I would not have been able to do this with cast Al. without cracking it. So for cost and durability I would stay with steel wheels on a MH. Although I did like my Mag wheels on my 54 Ford in HS.