I've driven a 5.0 fox notch REALLY hard and the a$$ end is way to light. If you are going to auto-x or open road race, I would say the SN95 hands down. If you are going for the 1320' then I say the lx notch.
Our SN95's handle very well with suspension mods. ie: full length subframe connectors, LCA, Panhard, strut brace, etc.