You just can't expect more quality for this amount of money , come on . It really depends what you're going to use them for , but for me worked very well connecting all my synth's and keyboard directly on my studio board . Each color makes it easier to find out witch is what . For 1.5 m long is quite good for the connection to be stable , but otherwise i will recommend you to use much better connection cables if you need like 5 m long .
Didn't had the opportunity to compare them with much professional cables but in my opinion it does the job .
Plug and play .