We traded a 38' Class A Itasca in for our 5'er..
MH positives: more convenient, can get up & move around on the road, longer range with it's 75 gall gas tank, toad is easier to drive around in when u arrive, easier to setup when u arrive at the CG
MH negatives: you get all the maint of a HD truck (cost) to go along with the coach RV maint--every MH is going to be a money pit, constantly have to put money into it, you have to keep it insured for Liab/UM etc to keep registration active in most states, 75 gallon fillups at the gas station!
After owning both (plus 2 other Trav Trlr's) I prefer the 5'er combo....