The Elastico model is one of the most popular, if not the most popular shoe ATM in the FS community, Macca even did a review on them recently. The Elastico Pro model is also very popular.
I had the Elastico Finale model, which I got for a show, but I sold them immediately after it, since I have enough shoes ATM and I didn't really like them, but Planta has them and he doesn't seem to have any trouble with his Sole Stall. The dots in the front give you some extra grip on the ball, which is nice.
The difference is mostly in the materials used and also, in the shape of the shoe, but I think you won't go wrong no matter which model you choose. Would be best if you went to a store and tried em out first.