There are statues that come out from a company from time to time that hit an iconic level, regardless of what they come out with later.
SS has some of these pieces.
The Hulk, both Green and Grey are examples of them. I have one of each, and was lucky enough to get them signed by Stan Lee (with pics of him signing).
Yes, SS will come out with another Hulk, or two, in PF down the line. Regardless of how "good" it is, even if the new one "looks" better, it simply will not match the level of this one because:
a) It was from a more traditional SS era
b) It was sculpted by Andy Bergolitz
c) The sculpt is bang on for detail, color, size, and weight
d) It is a Kirby Hulk
e) The ES is low for both the Green and Grey considering the number of fans for the Hulk.
f) It is, and always will be in high demand.
If you can only get one, I would suggest the Green one since it's color is more recognizable on display.
Also, you may want to keep in mind that to fully appreciate the facial features of this Hulk, it will need to be displayed on a higher shelf rather than an lower one.
Good luck!