I used to think MMS HS is definitely way better than the DX version.
Then it comes a time where I've decided to own one T800 to go along with DX13, and I have to choose on either one of the version.
I've chosen DX because of the vast variety of weapons (what's a terminator without guns).
After seeing all the comparison pics and having the real thing in hand, it changed my perceptions on the DX HS.
DX is definitely an improvement over the MMS (and I'm not saying the MMS version is bad).
Yes, the PERS eyes still bothers me very much but it still has the likeness of Arnold there.
And they made the face bone structure to look more natural and also improvement on the body shape.
At least it doesn't have the unnatural "pumped up" chest like MMS version.
Just my opinions.
One thing for sure, they both looks great with the shades on! LOL!