Personally i'd recommend the $1900 High End General Use Box.
Maybe upgrade some things a little bit.
EG.
PSU to 650W for extra $20
Maybe upgrade the HD to one TB if you feel that you need it.
After adding in costs for monitor it will hit your range.
Then again that system would need to be built by you so if you can't do that then I would go with a dell box so that atleast it has a warranty and such.
Sorry for double post too, I pressed the wrong button.
If you aren't gaming, you can downgrade the video card on that box and buy a second monitor or another hdd as Suic1de suggested.