I have a pretty solid idea on the subject of new balance shoes and spikes, but I have a partucilar question on the MD800 and the LD5000. I will probably run mostly 800s, 1000s, 500s, and mile, and so on... i am kind of a toe striker so i think the 800 would be comfortble, but over greater distances would the MD800 be to uncomfortble with the shape of the toe box/ plate. Again, I know a good bit about this subject, but would like a fresh view.