I have owned Indispention, Snipe, SBS, DeGraff, Hayling, and a few others. Here are my keys observations:
I currently have a big DeGraff and I like it a lot. It tows really well and is quite versitile in that you can move things about quite easily; we've had 6 pedaloes on it, as well as a 4m searider and launching trolley. (It's not for sale any more btw!). DeGraff seem to represent very good value for money, and they're quite low down unlike Indispention.
I don't like Rapide much. The university rib trailer is a rapide and a few bits have dropped off it over the 18 months since it was built. It also feels quite unstable at speed.
Indispention are very well built it would seem, but they are incredably expensive. One big trouble is that Indispention make their own rollers which are a slightly different size to ones you can pick up off the shelf in places like towsure. The Indi ones are a hell of a lot more expensive than the towsure ones. Given that they seem to fall off quite a bit (well the ones on Jimbos/mine did) that could be an issue. I found it possible in the end to get round this by replacing all the brackets that they sit on although this is a tad expensive.
So yes, I would get a DeGraff