I think I have owned them all. There is no best trailer just like there is no best truck. Once you buy one, then suddenly the hindsight takes over, if I had only bought an extra two feet longer I coulda really made money. You have to analyse how you want to arrange your equipment on the trailer. always have a side entrance door because what you need will always be in front of the trailer. we always allow the first four feet of the trailer to be storage bins, worktable, generator, refrigrator, and personal clothes storage. the real advantage to the enclosed trailer is that you can drop it onsite and that crew can work there without a truck. the truck and the foreman can then go back and get another crew and take them to another site. its possible to run four crews with one truck. it makes for a long day for the foreman. each trailer has a cell phone for emergency calls. I suggest that you go to a regional large car show (we have Carlile in PA)and you will see every enclosed trailer known to mankind. Talk to the owners and find out all the plus and minus of each trailer. Pay attention to the small things such as square doors and how hinges are attached or how Lazer replied about wrinkles on the skins. keep in mind that you will use the trailer more in one day then some of these car shows use in a whole year. Ramp doors on a whole have been trouble free but remember picking up an eight foot door 15 times a day becomes a real chore. everyone attempts to solve the problem by using all different contraptions to raise the doors and then the problems start to develop. always pay attention to tire size and brakes. Mobile home axels with non standard brake shoes will cause you headaches every time. those DOT roadside inspections will kill you. And those 6x23.50 tires that looked so beefy when you bought the trailer don't do you any good when you have two blowouts at 9pm at night and the only tire dealer that stocks that tire is 800 miles away. Stick to 15 inch tires. Haulmark and Pace are probably the best trailers for the buck. Classic and Tuflite are better but cost a lot more. Always consider maintenance when buying trailers