Upgrade speaker cables OR amp for Dynaudio C4's?


I have approx. $1500 to play with. Not sure if I will get more bang for my buck by upgrading my amp (Plinius SA-102, class A 125 WPC) , or my speaker cables (Harmonic Technology Pro 9's)

The rest of my system consists of:
- Speakers: Dynaudio C4's
- Preamp: Aesthetix Calypso with NOS tubes
- Source: Audio Aero Capitol MK 1 CDP

Amps being considered:
- Pass X250.5
- Moscode 401
- Parasound JC-1's

Speaker cables being considered:
- Kimber KS-3033
- Stealth Hybrid MLT

I'm happy with my Plinius amp... I just wonder if I'm missing something by not feeding my Dyn's with more power. I listen at moderate levels... mostly classical, jazz, female vocals, acoustic rock.
128x128pdreher
Missioncoon... I have no doubt the Pass X250.5 would be a nice amp for the C4's, but its too large to fit in my rack, so I'm sticking with what I have.

On a side note... I had seen your listing of your C4's... so I assume you sold them, and if so, what are you replacing them with?
Pdreher..No I didnt sell my C4s, I pulled the ad,I had a pair of Avalons picked out but they were sold from under me..Such is life..The market is too soft right now, the C4s are being hammered and sold well under market..No point in going backwards or giving away such a quality speaker...Im going to try removing a wall and making my listening room larger in the near future
Missioncoonery - I agree that the C4's are very undervalued right now. Probably a good idea to stick with what you have and focus on ways to improve via room treatments, placement, IC's, tube rollling, etcetera...