I am thinking about putting together a DIY sub for around $400 (definitely no higher than $450 including shipping). My system is 50/50 music/HT. I want a sub that has good low frequency output but is also tight enough for music. I am told that $400 will get me a DIY sub that sounds as good as a $1000 sub. That intrigues me. Any specific recommendations? Oh, one more thing. I do not want a huge enclosure. It does not have to be tiny, but it cannot be massive. And I would prefer an attractive enclosure.