I'll add to your confusion. Check out Prime Time, Prime Time Manufacturing, Manufacturers of travel trailers and fifth wheels
. Their web site is full of info and worth taking the time to read, especially the Eternabond Construction.
They are a new division of Forest River that has been around about 2 years. Don't worry about the short time period though. The people running this division are very experienced and know what they're doing. Their customer support is the best I've ever seen.
If you going to tow with a ½ ton I would look at the Tracer line. There may be some LaCrosse's a ½ ton could handle, but I think it would need to be one with a high tow rating, like a HD ½ ton.
You can check out the Prime Time catagory (under the Forums tab) on this site to see how owners feel about their trailers. Also Prime Time is represented on this forum (RV Guy) and you can read some of his post and how he has helped us.
Good luck and happy camping!