My understanding is the Sphinx has fairly high port durations as cast. If that fits your application it’s great. If not, it needs modification to get it to perform for a woods/Mx rider. From the little bit I have heard, it sounds like the Lynx may be a better option for woods/Mx as cast and not needing modification. I think the bigger lynx is cast with lower port timing than a sphinx? Not sure. I haven’t heard any first hand comparisons from someone that has had both.