More gain. and a parametric mid instead of the presence. Apparently you can set the mid freq to around 1kHz and it works like the BDDI, but Ive never had a BDDI to compare to. The one thing that may or may not piss you off is that the bass and trebz are after the gain section, but the mids are before it.
Thats prolly the ONLY thing that's kept me from buying one again. I like my mids after the drive. That way I can pump some low mids, and enhance, not increase the amount of drive. Anything below about 600-700 Hz adds volume IME, and backing the drive off is not the same as higher drive->eq.
As always YMMV
