I'm pretty partial to ASC Tube Traps. They made a huge improvement in my own room, and it doesn't remotely sound dead. After talking with them (the people at ASC, not the Tube Traps) the speaker placement was just as important as the traps themselves. Do the math and get your speakers 29% (I believe) from the wall behind them.
tubetrap.com is more of a fansite, but has good setup diagrams and such.
Acoustic Sciences is the product home.
I'm still not done with what was "prescribed" for my room. I should probably take the dollars I have for a turntable purchase and get another set of traps instead.