Around this time last year I came across this site. Admittedly I was extremely suspicious at first. I looked through the reviews and figured if I could pay with paypal it must be safe, if not, then I was secured with paypal and would hopefully be refunded.
Anyway, after a smooth transaction I went ahead and bought another as we have 2 xbox's. Very happy with everything, the price, the simplicity of the purchase and it's pretty much instant!
I won't go elsewhere now for Live membership, just bought another 2. A safe, secure website for anyone who feels nervous :)