Hi, Chris,

When I was in the market, it seemed pretty generic. It seems I remember when I calculated the cost, mixing my own was markedly less expensive.

The premix gives pretty consistent results...we had a little trouble trying to get the mix consistent on each load. I think the water was more critical than the ratio, however.

If you're mixing a little, I'd use premix. If your mixing a lot (I think I used about 90 large bags) the cost overrode any convenience or consistency for me.