#8 is a pretty, well conditioned and a relatively mild playing resort course. There are no houses on it which is a plus. I'd bet that the majority of resort players who play #8 really enjoy it. However, nothing particularly stands out about the course - it is just a solid, aesthetically pleasing, well conditioned golf course.
#4 is quite a different story. It is a brute, particularly around the greens. In my opinion while the greens on #4 are larger than those on #2, the edges of the greens on #4 are more severe. The greens on #4 are downright intimidating. I didn't particularly care for the pot bunkers and I don't see what they have to do with Donald Ross. It's certainly an interesting experience, however and deserves to be played once.
If one wanted an alternative to #2 at the Pinehurst Resort, I think many on this site would prefer playing Ross' #1 and #3 which have plenty of charm and better reflect the original feel of Pinehurst (aweful 1970's housing on #3 excluded). Both are downright good golf courses.
Pinehurst #3 would be very fun to play with hickory shafted clubs. I only thought of this after having played the course so I didn't check (I doubt they would have them), but I think them having the option to rent hickories for #3 would be a great move.
However I would rather play Pine Needles or Tobacco Road over any Pinehurst course except, of course, for #2.