Welcome to CD Freaks.
I think that many here would suggest the same as you've heard.
Personally I use a mixture of flat & round cables in my PCs and I think my burners give the same results - from scanning perspective - regardless of the cable type.
I suspect the main thing is to keep the cable length to 18in or less as recommended by the burner manufacturers and use quality ones. Mine are Akasa and Belkin and are all properly shielded.
As for the ones in your links, I suspect there's not much to choose between them but at least you get more of a description with the Coolmax ones so I'd probably go for them.