I use these cables since I started.
The price is very valuable and it is not so bad saying that it is useful to connect an amp or effect has its effects linking them to the extent that we not spend his time to disconnect / reconnect or move the cable (in this case is to mieut quality).
I use a Planet Waves gold shielded to connect my guitar and speaker cable to connect my head to my cabinet but I think these small cables are toujorus useful.
The quality / price is pretty good, because these cables are still a real life.
I would do without this choice problem but provided you do not use it as hp or intrument cable and just move them to parasites or loss of signal ca rete manageable, avoid long lengths!