Hi Crystal,
Thanks! So my understanding is the new tablets, regardless of their names, are all the same. The only difference seems to be the software and the art comes in medium. Based on Damien's advise the medium seems to be the best size for my screen. As for the Art vs the pro, the pro has a resolution of 5080 lpi and the Art 2540 lpi. I'm not sure how important this is for photo editing.
Thanks for the link but the postage to Australia and the exchange rate would make those more expensive than buying them full price here :o)