Best cables and next upgrade for my system ?

Wadia 301 CD player (XLR or RCA)
Yamaha DVDS2300 Universal player
Anthem AVM2 processor (XLR or RCA)
Classé CAM-200 Monoblocks (3 front channels) (XLR or RCA)
YBA 1 amplifier (rear channels)(RCA only)
JM Lab Micro Utopia (main and rear)
JM Lab Electra CC901 (center)

I need cables for everything (speakers, interconnects, video etc.). Is there a specific make that would match well with my system ? Should I go XLR or RCA ?

What would be your next upgrade if you had my system ?

Thanks and Happy New Year to all