I also have a quilt machine with robotics and I love to custom quilt. I rarely do an E2E as it was so hard to get each row to match up with my old robotics but with my new system, IQ its a lot easier. Still I love to do custom. Even if I do an E2E in the body of the quilt, I'll do something different in the border area. Just my way of making it a little special. I watch all the videos I can to help me master my robotic system, I look at every quilt that has been quilted to get ideas and I'll save that pic if I think I might be able to use it in one of my future quilts or just to remind me the quilt pattern they used. I feel the quilting design is important to the quilt top but that's just my opinion for whatever its worth. If its just a utility quilt for myself I will probably do the E2E but still with the different border design. Would love to be able to do ruler work but so far haven't tried my hand at it though I have a lot of the various rulers.