These are two very differently-voiced cables.
The Kimber is more sparkly and detail oriented with a very exciting presence and crispness, whereas the Galileo SX will have a richer tone, more impactful bass, deliver impeccable breath and decay, and deliver more effortlessly.
The Kimber tends to come out at you more, whereas the Galileo SX draws you in.
The right choice depends on your personal preferences and how each cable will have synergy with your system.
I am a Synergistic Research dealer, but I had an entire Galileo SX loom prior to dealing for them. One trick I've found is to use the latest Master Tuning Bullets on the Galileo SX. It will improve the performance considerably and bring much more realism to the table. I've since moved on to an entire loom of SRX and SRX XL.