Tool fan needs help with speakers (and electronics)

Tool, Alice in Chains, and Clutch are what I play most often. I also like some old country, some Hank 3 and some more extreme metal.
I will get flamed for bringing up Tekton but especially for the kind of music you like..... Tekton DI used and maybe something like a Parasound hint used would give you a kick ass system around 4kish. 
Also agree with some other posters in that room at minimum you will want to get a big area rug and some mild wall treatments. 

Another brand I've always been curious about but that makes huge speakers that will fill a big room is Tyler.  I assume they're not the last word in refinement but I don't have direct experience.  They sure look fun.

http://www.tyleracoustics.com/Deal%20of%20the%20week.html

NHT or Paradigm. NHT will be sealed, Paradigm will be ported. Would definitely pick up used and save a ton of $$$. Two pairs of NHT 3.3 on here and eBay for around $1500. It's a large speaker, but was very highly regarded. 

Tool is my favorite band ever. I listen on Goldenear T1s with an Oppo BDP-95, and a Rogue Audio Stereo 100. Sorry jpaz, you need to give tubes a try, they rock!