I've owned Coleman and Starcraft trailers over the years and both have been good. Coleman is now manufactured by Dutchman which is a subsidiary of Thor, a reputable company with good customer support.
Starcraft has always been a solid company with great trailers for many years. More recently Jayco bought Starcraft. Jayco has a very good reputation and builds many entry level but well built trailers.
My inclination is to go with Starcraft as the better of the two although they are fairly close.
Have you looked into the Winnebago Minnie series? They're rather new to the market but seem much better construction that most other light weights.