Thanks for the input, gives me a lot to ponder since the facings are pretty close together already on the 8D Tankers. The tricky part is my right foot feels slightly larger so though that foot was tight in the 7.5D but it fits almost perfect in the 8D. Sadly the reverse is true of my left foot, which seemed to fit better in the 7.5D. Thus my thoughts on the 7.5E maybe being the best of both worlds so to speak. If not it may be back to a 7.5D and have them stretched in the right foot.
I just feel like I need to do my due diligence in finding the most ideal fit, the Leffot Tanker is a grail for me and hate the idea of not reaching for them enough due to an off fit.
Below is what the facings looked like on the 7.5D vs. 8D.
Warning: Spoiler! (Click to show)
Might be some 8D Tankers going for sale if anyone is interested haha
Your 7.5 laces up like my 8D.