I still think about this daily (a bad sign, from my past experience), but I have resolved to not use any credit towards my rigs from now on out.
Having just re-fi'd, eliminated all debt, and still maintaining a healthy dose of equity..., no way is a $6k mic hitting my books.
But, as carl mentioned..i'm 1/2 way there, and saving FURIOUSLY.
no cambridge 740c for me right now.
no squeezebox