if I am not mistaken they are located in canada. As for the best nunchaku to start with it really it a toss up. I don't recomend foam ones for a few reasons.
-the handles have a tendancy to slide off
-When you hit yourself with the foam chucks you will have a tendancy to keep swinging without starting over. Wood chucks will motivate you to practice until the teqnique is perfect.
-You can't practice "loaded" strikes with foam chucks "loaded" strikes are moves that allow you to "charge" you muscles power and release it like a spring, very fast and powerful.
I recomend buying two pairs, Rattan with a chain and hardwood with a rope. Rattan is very light and really doesnt hurt that bad. I recomend the hardwood with rope because a rope has a cleaner feel and can help you to perfect your mechanics.
When you do get a pair remember, repitition is the absolute key to success. Don't get bored learning basic cross strikes and other simple moves, the basic moves are the key to nunchuck use in combat. http://www.na-games.com/Movies/smallerchuckdemo_1.mpg
Here is a flashy demo of me, not too much basics in here, but trust me, I am very familiar with the basics.