We use to rent and it does have it's good points but I still did not like it, you have to pay a butt load, have less room, and everything is on their terms (pickup times, cleaning, damages, ect....). But if you only use your trailer a few times a year then it might be worth it, I guess it just depends on how often you use it.
I think the economy is going to hurt all of these trailer builders sooner or later.