Block 3. There are a few people who are trying to be Block 3 purists. Not that there is a problem with that or anything. But you can't really know how the Block 3 Meta is going to be like until March of 09. Sure, you get the general idea, yet it isn't the same IMHO and only MHO. But I am getting slightly off topic, so allow me to get to the point. I don't have to state the obvious by pointing out that we are still in Block 2. Albeit, we have block 3 cards, yet I feel that the best way to get ready for Block 3 is to build with both 2 and 3 to get a general flow for your deck.
Of course, I have been getting busted for using block 2 cards in my new Terry deck built off the All symbol. I mean, i can see why someone would be doing straight block 3, but for me, the only way to make sure that my deck will flow good is to get a general idea with block 3 and fill in any gaps with block 2 to compete in my leaugue tourney's or casual play, until I find a suitiable card type to fit into my plans for my deck. So don't knock block deuce. They are legal till March 09 anyways.