Arc + Mcinthosh + Kef + Primare

Hi All,
I've almost completely upgraded my system from Parasound + Paradigm to
Arc Ref 3 pre
Mcintosh Mc501's
Primare CD31
Kef 205/2
Cardas golden cross xlr ic's
Nordost Red Dawn speaker cables
Furutech power's

My last item to be upgraded is the Primare cd31! Can someone pls give an advice on this? I like big bass or full bodied sound. I'm considering mod the Primare or go to Wadia! Does intergrated cd player has same sound quality as transport+dac? Or big differences? Budget around $5000