Luigi,
As long as you don't overload the trailer or imbalance it (too much front or rear bias), most any of the trailers will do pretty well. I pulled a Pod for some time- I don't think these are made anymore. It was just a simple frame with a fiberglass "pod" sitting on top. Slightly more than a rooftop carrier on wheels, as the really basic trailers are anymore. It had leaf springs and would bounce alot, but you really didn't notice it behind the bike. I pulled that one the most with a Wide Glide. Then we upgraded to an Escapade by California Side Car. The air ride makes it much smoother traveling. You notice it less when you go across RR tracks at an angle, than the pod. I would say that as long as you have an independant suspension, you should be fine. A solid axle will transmit more to the bike, but it's not unmanageable. Your wallet will determine more what you get. If I wanted a simple cargo trailer, any would do the job just fine. Starting and stopping will cause you the most learning once you start pulling the trailer.