well ...as stated, I am fairly new to hi-fi but will give my 2 cents worth
as stated, I am setting up a vintage/classic system, as I do not have a large budget ... I have so far purchased a Marantz cd63 MKII signature cd player, a pioneer A400 amp and a pair of old B&W DM2 speakers (the 1st version-3 way transmissions) plus stands etc
I also recently purchased several 2nd hand speaker cables on ebay ... these were from someone who lives locally and were cables that were removed from restaurants etc that were being refurbished ... bargain prices ... 0.99 pence per set, and some cables were 13 -20 foot long ... paid £8.95 for a large bag full and seller included loads for free
Included in the cables were some thick monster copper cable, QED, Jamo, and a few others with no names
All cables are unterminated, so have sorted into 3 metre lengths, and have tested on my system playing the same cd tracks at the same volume setting
Conclusion: there are major differences which is clearly evident to both me and my wife ... so those who say that cables do not make any difference .... YEA RiIGHT!