Man, you chime in on every DD thread and complain about their lows when you've already been proven wrong. Yes, they have light soft parts. Yes, their Fs is high, but they can dig. Is it Tantric Sounds low? No. But they're a capable woofer.
Your box recommendations will depend a lot on what power you have, but 2.5cf is a good general box unless you plan to run more than 1k to it. And I thnk 37hz is a good tune for that woofer with lots o' port.
Also, if you have the space, the 2500 series is great in a 4th order bandpass. You get a nice gain at or near tuning and you can still catch "the deep bass" as Psiho like to say.