I just spent the last 2 months looking at trailers all over. Settled on a PJ Trailer, 20' bumper pull, metal deck, 5200# axles. I've owned both wood and metal and the metal is my preference hands down. Yeah it's slick sometimes but it just makes for a nicer, sturdier, longer lasting trailer I think. You can get recessed D-rings in the floor which I like. The metal floor added approx. 400lbs to the weight of my 20' according to my dealer. I haven't confirmed that however on scales.
I can say one thing. All trailer are NOT equal. Go look at some of these cheap trailers. Take a tape measure and measure the floor bracing spacing and check square. Some of the new ones I saw I would be ashamed to sell. Some had gaps in the welds on bracing and the tongue wraps even. You'll be surprised when you crawl under some of these.
PJ trailers are by far the nicest, best built trailer I saw. PJ trailers come standard with lifetime warranty LED lights and are powder coated (even underneath the trailer, A LOT of trailer aren't even painted underneath). When I saw the PJ trailer it was the attention to detail that caught my eye. For example the wiring. All the wiring was run through conduit and they used the adhesive heat shrink connectors for splices and connections. They also took the time to recess and flush mount ALL the LED lights which there are a ton on my trailer. They come standard with brand new top of line Provider radial tires, and Dexter axles. All of this stuff is standard on PJ Trailer.
The thing that ended up selling me was all the customization options. You can pretty much order a trailer completely custom for no additional fee except for the options you add. I was able to order 6 recessed D-rings all in custom locations on the deck for example. You can change axle configurations, brake configurations. dovetail setups, different powder coat color options, etc, etc. Take a look at there website and you'll see what I'm talking about.
http://www.pjtrailers.com/trailers/c5-5-inch-channel-carhauler
I ordered mine at Wholesale Trailers in Fayetteville, Tn. Great to deal with and took the time to sit down and put together a custom order for me. They deal off volume so their prices seemed hard to beat.
http://www.wholesaletrailerllc.com/
Oh. I was told by my dealer who has actually toured the PJ factory in Texas that Load Trailer is almost the same trailer. He was told that two brothers owner PJ Trailers and got into it and the other opened up Load Trailer across the street. At least that's what I was told.
Hope some of this helps...