Direct quote from the
OP, just to help direct the thread.
Yes, Tau and Eldar (and the combination of the 2) have made a mockery of power armor, but if you're not heading to a tournament and your buddies aren't playing Space Elves or Fish, Chaos Space Marines are going to do alright. In fact, Codex:Heldrake was the OG when it came to making a mockery of Power Armor. All is not lost...
And what's the point of talking people out of playing non-eldar or tau (or Necrons and Chaos Daemons we're extending to the "other" really good non power armor codecies)? Do we want EVERYONE playing the same army? A quick glance at any forum will show one that Eldar and Tau are the top armies of the day...do we need to slam that point home in a thread asking specifics on another codex?
Besides, the chasm between what we consider to be the best and worst isn't as great as everyone believes. I had a really great game against Tau with my Blood Angels the other day...a game that I lost, but just barely. I also beat my buddies Chaos Daemon Flying Circus list with the same
BA list, which is another match-up I normally lose, but it's normally close, and apparently can be won.
It can all be summed up by merely saying: No army is so bad that you can't play it, and no army so good that you must.