I tried the demos and am a bit disappointed as I don't see any TRUE amazing feature.
PROmats are nice but I suspect they take longer to render.
SplineUVs is too much time consuming for a simple uv-spline mapping.
render buffer is nice but addes too much screen estate to my already "cluttered-while-rendering" screen- I could do without it, sorry.
Only thing that I liked is the IES enhancments.
Contrary to what was insinuated - the UI in MAX DEsign is the same as MAX and they did not change it.
NIR