The Penta is my favourite at the moment, well built and performs well. It is effectively a 1m dish with parts of the outer rim cut off, I was quite sceptical at first, but having used them for a while, I am very impressed.
Your receiver should be fine for a motor, you could try swinging your dish around to Astra 28.2, as there is a report of someone in Milan receiving the 2D channels with a 65cm, if you can get partial reception with that, you will be guaranteed with a Penta.
