What trailer manufacture is better or value for price

With a 150 truck, I would suggest you look at trailers that are 24 ft. or shorter. I am impressed with the Lance trailer series which makes trailers in the 16ft. to the 24 ft. range. I would also look for a used in good condition RV to avoid the big deprecation loss on a new RV.
Your 150 truck will be some what limited except for level highways and no strong winds, elevations and mountains might be another story