Advice on cables for Tannoy D500 powered by Sansui au-317ii

What are you using now and what lengths are your current cables?
How many Interconnects? RCA or XLR? Price range? I have some ideas but need more data from you;>)

Thank you Tom for your help :)
I have the tannoys connected to the sansui with 2 cables of 4 metres of cheap QED (0,74mm2) white. They cost me 22€ or something in FNAC (http://www.qed.co.uk/speaker_cables/profile/qed_classic_42_strand_cable.html.)
My RCA interconnects for the CD are those regular red and white found in my house from other gear, perhaps with 60 cms (6€ maybe).
My old Philips turntable has its own RCAs.
Any ideas on how to improve?
Best

I forgot to mentioned that I intend to add to the system a chromecast audio (short cable with 3.5mm jack and RCA) and a 5 metres cable jack 3.5mm (male) and 2RCAs (male) to connect my macbook. Any hints on those?