If a GTS4 and Section 2 had a child, it would look like a NEXUS.
I loved flying the GTS4 with its fast movement, loops and low-end grunt- the issue I always had was it's relatively small wind range. This is mainly due to my larger frame 6'3" 220 pounds, but also due to the kites squared off C-Shape design. The Section 2 drifts beautifully, turns well, has a large wind range- it's perfect for foiling as well. The NEXUS combines all of these great attributes into one kite.