E-track is great, a must have.

Mine is a 5x8 with the extra 6" in height option that I bought used in 2010 for $1600. It's saved me twice that since I've owned it. Last year I sprung for new tires and wheels bearings which were easy to install and not too expensive. It's been back and forth across the country at least five times (probably more) without so much as a burnt out bulb.

Rear opens to a ramp which I find helpful. I've modified it to get around the lip at the bottom of the ramp so my hand truck goes over it smoothly. I keep a.few.sandbags up front inside to help it ride better when empty, and it's light enough for me to move around in the garage by hand.

I can haul.three pins folded up easily, with plenty of extra room for supplies and/or tools. I can squeeze in a fourth pin if I have to. NIB, it'll hold three, NP.

Size wise I'm happy. It's narrow enough that you don't notice it back there and doesn't stop me from hitting the drive-thru lanes at McD's or the bank. It's 12 years old now and I think it'll last a while more.

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Another point worth mentioning about the tires. Check to see if they've been balanced. I know, I know, you'd think that's obvious, right? Well, some trailer manufacturers don't bother to balance the tires they install on the trailers they sell. The end result is that after a few years and miles, those tires lose chunks of rubber on the treads due to them hopping around. Balance them, or you'll end up buying new ones prematurely.

I should add that all of the above is from personal experience. The tires on the used trailer I bought were already too far gone when I bought it, but when I got a set of new radials for those rims you can be sure that I had the guys that mounted them balance them then, and I've been happy ever since.