Phono amp/cartridge question

Currently, my setup includes a Pioneer Pl-630 TT w/Shure V15 type IV cartridge and a Cambridge Audio 640P phono amp. If I were to change to Graham Slee Gold V phono amp and a Clearaudio Virtuoso cartridge would it result in an appreciable increase in transparency and bass output? Or would such a change simply be overkill with no real improvement in overall sound? Thanks for all responses.