Love my one step looper use it all the time. Brilliant for earrings so that your loops at the top are exactly the same size. You can get it snug to the bead, you just have to move your bead forward a bit before you start looping.
Brilliant for creating a rosary chain effect on necklaces too.
I had a bracelet of mine show on the wall of fame on jewellery maker on Monday, I was so excited lol.
Have a look around the net and ebay. I have had mine since they first came on the market here and paid about £18.99 with free p&p.