..don't know if anyone is still reading this thread, but I moved on to the VPI 3D tonearm (a very big upgrade - use Discovery wire, not Valhalla)...have all the components on Audiopoints (another big upgrade).... and have just installed Maestro sockets in the walls to power my black blokes....a HUGE upgrade.
Don't be in such a hurry to upgrade. The Wood Quattro's are great speakers. The 5A's take it up another step, but only another step for a big layout of the green. Make sure you want to do it.