Price was the reason for the comparison. He was nowhere near dual 2500 budget range. Also, volume requirements for wide bandwidth operation using 2512s and 2515s is ridiculous in comparison.
I went with 3 sa-8's over 3 1508's. Only saved a few bucks so money was not the issue. Just never had much luck with DD was kinda disappointed with my 2510 for what I paid for it. Just a personal exp though so take with a grain of salt.