Sanwu lasers silver series 520nm or 525nm?

[Petersoft]

Hello. I have a question. I am saving on the laser from sanwu "silver series" and I wonder if it is better to buy the 1.2W 520nm or 1.2W 525nm version. 520nm is a bit more expensive. as far as I know 525nm will be slightly brighter to the human eye than 520nm. My question is what do you recommend that I buy if the 520nm diode has any advantages over 525nm and whether the color can be distinguished with the naked eye because I have not found a comparison of the 520nm and 525nm laser anywhere? best regards and hope for an answer.