Megablast Vs Audio Pro C3

[Fab5]

I've got a megablast speaker in my home office and I'm wondering if the sound quality of the Audio Pro C3 has better sound. I have the C5 downstairs and it has great sound and bass compared to its size. I'm just wondering how the C3 compares the C5 and if the C3 has better sound enough for it to replace the Megablast.