Im looking at Antiheros classic eagle 8.75 or 9. At 6'4 & 11.5 shoes i want a board I can have my whole foot on and a lil wider wb.
How are they riding compared to your reg 8.5?
As jay_nev said, they are nicely bigger, somewhat longer and somewhat heavier to lift / turn, especially in the 9, but they are both lots of fun to skate and once you get used to a bigger board, you might not want to go back down in size at all, or wondered why you never went up that big before now.
I am much the same in height and shoe size, even though I love skating the bigger boards, including a couple of white 8.75 eagles completes and a 9.0 I currently have, there are way too many of the smaller boards available and I still like to have a bit more movement, so my go to is about the 8.38 to 8.5 size.
The white eagle at 8.75 x 32.75 with 14.6 wb (with Indy 159s) is a lot more maneuverable than the orange eagle at 9 x 33 with 15 wb (with Indy 169s) so you might be more inclined to go with the 8.75 white eagle.