I don't have a Blackout issue. I've used mine with three different Cards. All ATI, X800PE, HD2900XT, and 4870x2. No Blackouts. Input lag seems non-existant to me, but I'm not a Hardcore gamer so not sure I would really Notice it. I can Tell you COD 4 and Crysis and Crysis Warhead are AWESOME on it. The multiple Inputs are awesome also. I wouldn't trade it for anything out there. Multi inputs were a pre-req for me and it has tons of inputs.
hmm i guess ill try out the xhd3000 and see if i like it, if not ill get a 3008wfp