Welcome to the forum. The Nimbus is what some would classify as an entry level coach, where as the Phenix is now there mid-level, with there top of the line being the IH-45. Here is a link to there product line:http://www.foretravel.com/pdf/Foretr...%20web%20s.pdf
You can look this over to see the difference in standard features of each of there coaches. After looking at your profile I see that you live in LA. if you have a chance it is a short drive over to the factory to look first hand at there products. They also have a campground at the factory that you can swing by and talk face to face with other Foretravel owners. Good luck in your search.