RE: Nitro Model's (nitroplanes.com) Airplanes - Are They Good?
I have built several, and a lot depends on the plane you choose, and your building experience.
The manual? Forget it. If you NEED step-by-step instruction, look elsewhere. Their manuals are among the worst I have ever seen.
Overall aircraft quality has been very good in the planes I saw, but their one downfall is any plane that has wire landing gear. The wire is not heat-treated (or at least, not PROPERLY heat-treated) and bends much too easily.
So if you can build without instruction, and don't mind bending your own music wire for gear, the planes are a great price.