Speaking of Niroplanes/Raidentech, I saw one of these up close not too long ago:

http://www.raidentech.com/nilosuaetr40.html

I was impressed. It looks like a Goldberg Tiger-2 but it's not quite the same. The Tiger-2 has a symmetrical airfoil and this one appears to be flat bottomed. Still, for $69 it didn't look half bad in person and flew great. It would make a good, inexpensive, relaxing Sunday flyer.