decompression

[DRE]

I'm not trying to tell you what I think you should do, I'm just interested to start a debate on decompression since I know there are a lot of different opinions about this topic. If you don't want to discuss that on this forum, that's fine with me. There's enough other forums where this stuff does receive quite a bit of attention and informative discussion.
Joel (in a post about DIR) pointed out that there's more to DIR than just gear config, so I was interested to approach other topics. If you'd like to start talking about physical conditioning for diving, proper scenarios for doing boat diving, proper gas management scenarios in overhead environment or whatever, start a new topic yourself and I'll participate in the discussion.
Otherwise, if you prefer giving some negative attitude, I can point you to some other forums where that's how they do things.

So here's a specific question: do you use 100% O2 or EAN80 for your final deco gas (or any other mix), and why?