MTG Salvation

What do you think is the best strategy for beating the mirror? I've read Guillaume Matignon's article and he is a strong believer in Pyromancer Ascension. I've also read elsewhere that it doesn't help with potential grave hate. In Brian Demars' article, he said that he sides out 4 Lightning Bolt vs. the mirror, which obviously wouldn't be the case if he played Pyromancer Ascension. I don't think that is right in any case.

1. Do you like Pyromancer Ascension or not and why?

2. What finishers do you like, outside of the two 4 ofs?

3. Do you like Threads of Disloyalty or Beacon Bolt? Why?

4.

Damn, I've been testing the Dredge matchup and it seems nearly unwinnable in game 1. Even with the Thing bounce, Dredge can easily reload and be right there where they were the turn before, with only getting burned out being a concern (tough to do with Creeping Chill).

What decks give you guys the most trouble? I'm looking for a deck that does well vs. Phoenix at the GP. Outside of something like Tron, Martyr Proc, and Burn, what stands the best chance of beating you? Thanks in advance!

12-0-3 in the Swiss.