another member brought up good point. if you are staying for a few weeks or so o in 1 spot/camp ground) then a garage is the way to go. that member stated some camp ground either do not have room or do not want you unloading your toy and parking it.
i have owned 5 toyhaulers in 20 years. 3 bumper hitch and then to a fiver. 1 of the bumper hitch was totaled out pretty quick from some 3" hail! bought a 2011 wolfpack 295 brand new off the lot in walcott iowa. used that for 10 years with almost no issues. the fivers or goosenecks tow the best imo. projection hitch's ( henseley/propride) are the best in that field for sure. i do not believe they can do the same job a fiver/gooseneck can but i am no expert.
so i went back to a bumper hitch for a few reasons. #1 on the list was that i drew the floor plan and had it custom built/taylored to our needs.
fivers offer more living space in the same oal. the taller height grabs more wind as well. i have noticed there are a lot more floor plan to choose from in bumper pulls/tt's. the bpconversion g/n bolt on hitch answers that need for those that want the stability of a fiver/g/n on a bumper hitch and it transsfers to other units.
all of my toyhaulers have been open floor plans. i have no use nor want the extra 6' of a garage model. i am not retired nor travel across country. our travels are destination trips except the st anthony sand dunes trips as they are 16 hr drives one way. thats a 4 hr nap half way.
it really comes down to you preference of floor plans and your truck as they can pretty much all be made to tow like fivers/g/n's as they handle the best.