Getting It On Cd Options

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I'm mastering with DP3 and waves gold. I'm monitoring with tannoy 6.5's, and my loudspeakers are Bose 301's. I'm burning with Maxell cd's.

I've got the project sounding great (to my ears), I've dithered and got it down to 16 bit, and I'm using 'Toast' to burn to cd. The problem is that the cd comes out sounding very flat...not at all what I've got happening in the monitors. I've done a test where I mastered a song, burned it on cd, and played it back using the same speakers, and it's no where near the same. Can any one explain that?

I just wondered if anyone could offer a solution for this problem. Should I avoid using the G4 to burn? Is Toast really just a breakfast snack after all?