spend more money on pre or power amp ?

if I had $10,000 to spend on a power and pre amp. Would I split it equally in two ? Or would I give 5000 to power and 10,000 to pre or vice versa ?
My system is a Wadia 21 cd player, VMPS RM 40's and a classe CAV 150. I find the system sounding quite harsh. Any help with this.