Richmodelusa looks good. I don't know much about them, but two of the Nitroplanes I built a year ago I didn't like and I wasn't very happy with them compared to Hanger 9, Sig, Great Planes and Goldberg. Also, I had a CG issue with the Nitro, the manual didn't tell me what the proper CG was supposed to be. The Hardware that came with it was terrible, and the parts didn't measure up... or even up correctly.
Some have had good luck with Nitro, I didn't.
Luftwaffe Oberst
Aero Modelers Club
AMA District II
Pulaski, NY