I just purchased a Yamaha RX-V530 w/JBL NSP1's and need a subwoofer to complete my first HT project. I was about to purchase the DLS 10 after reading much praise, but it's discontinued! So what other alternatives? Better or worse? I heard the Sony SA-WM40 was the recommended subwoofer before the DLS 10. I would rather not get it since I consciously know that the DLS 10 was cheaper and better. So any alternatives? Can I build something as good or better than the DLS 10 for that price? Please help! Thanks!