Aye, this is definitely a better way to go for large values. I tend to not recommend this though because people sometimes create a bad source of random numbers and end up in occasional infinite loops. On the other hand, the above solution can be sped up in large cases by allocating space in the array ahead of time with a Resize node. I think the best possible solution would be to steal from cryptographic algorithims and use a seedable one way modulus generator as those functions are guaranteed to result in a unique and even distribution within a finite range