I sold my Palmer PGA 04, and the hole left in my fx rack is killing me. So I've checked my recording chain and decided the best upgrade would be a quality A/D converter. This is my current chain for recording acoustic and electric guitar, respectively: Neuman KM184->Presonus MP20 mic pre->A/D converter in my Lexicon MPX500 fx box (Alpha Omega converter I believe). For electric, same chain but with SM57 and e609 silver mics. Am I wrong in concluding that the converter is the weakest link? I'm not exactly certain how the Alpha Omega converter ranks. Or should I aim to replace the Presonus mic pre first? Which item is the weakest link in your opinion? If you agree it's the converter, please make suggestions, I would like a 2 channel converter for under a grand. If you believe it's the mic pre, suggestions for a 2 channel mic pre for under a grand would be swell.