A few months back, I bought the new version of the Competition Pro. I didn't buy the USB one, as I was going to use it with the CD32, 600 and 1200. I'm very happy with it and the quality is as high as it was back in the days.

In my opinion, it's worth the money, as you get to play the Amiga games they way they were meant to be played.

Vesalia has a bundle you can purchase for 17.99 EUR. Look here.
You'll get a CD with 185 classic games bundled with the stick.

AmigaKit has the blue USB version available for 30.46 EUR, which is a bit expensive. Here you'll also get a CD with games on the side.

Hope this was of some help mate.