Congrats on your purchase. If I was a betting man, your new machine is already setup with the new Interlace software Kornit has developed. This software will eliminate the majority of the issues we have seen over the past 3 years of Kornit ownership.
The investment was wise as long as you have the business model to support the investment. Brother may, and I say may because they still haven't announced a release date for their new machine, be cheaper to purchase, but from what I was told at the SGIA show, the cost to print a colored shirt will almost be triple of the Kornit. It doesn't take long to make up the intial investment difference at that rate.