I would suggest adding these to your list. I believe they're all around $1,500 or less but, of course, if depends on where you purchase.
Lemond Poprad (see if you can find a model from last year)
Bianchi Axis
Surly Cross Check (everybody seems to love this one on the forums)
Kona Jake the Snake (ditto)
Raleigh RX 1.0
Salsa La Cruz (I'm guessing this is around 1,500 but don't know for sure)