Absolutely no problems with this site or the products at all. I have purchased form R43DS.org on 3 different occassions (for myself and then gifts for others) and each and every time I was greeted with friendly service, helpful sales and support staff and the products work just as advertised.
On my second order which was for a gift, I wasn't aware of a sale they had, and didn't enter in the coupon code. I didn't even have to ask them, and they discounted my order themselves before shipping it out, so I ended up saving $6. Xx off my order! Now, I don't know how other stores are, because I have not bought these products anywhere else, but I would not hesitate one little bit to tell my friends or any family members to buy from this site. I wrote a review here because working in customer support myself, I see bad reviews posted much more often than positive ones. I can only speak for my own experience on 3 different orders spread out over the course of 4 months, and each time I got what I ordered, had help when I needed it and I love the R4!