I too struggled with mirage and there warranty, cracked frame, axle fell off, broken hinges, broken door lift, rust like crazy....overall very poor workmanship..they seem to draw you in with all of the small creature comforts...and at the end of the day.....I bought a crappy trailer...I sold it to some poor soul. I bought in 2009 and sold in 2011. Sounds like Christopher has had good luck with them. He got a new trailer last year, and getting another one this year, if we could all do that we wouldn't have too worry too much.
Maybe they have changed.....but I can tell you my experience was not good....and will never ever tell anyone to buy a trailer made by them. that's what I told them when all my warranty claims were denied.
Sounds like you need a multi sport trailer. I bought a charmac tri sport elite...they are pricey, but I sure have been happy. Wasatch trailers put it together for me. Aluminum us the only way too go (in my opinion).
I have zero experience with the other trailer manufacturers you mentioned.