Lebih baik nikon D60 atau D90? Atau ada pendapat ttg DSLR merek lain?

Mencari pengganti Sony alpha-230

I love my Nikon D90. I bought it almost two years ago and I'm still learning from it. Today, I would look very closely at the D7000.

If your Sony has been good to you, have you looked at the alpha-580?
http://www.sonystyle.com/...4294951458