I have two of the EXO3 Graphite 93s. With the ports, overgrip, and tiny stock dampener it weighs 351g. With the grommets, 353g. I prefer the ports.
The 93 is much, much more headlight than the 100. For me, that makes all the difference. I hit a 2-handed backhand, and the 100 is way better for that, but the 93 is still all-around better.
I do have a harder time with a kick serve (even with it being so headlight, it just doesn't move like a 10oz racquet). But the flat serve up the T is pretty deadly with this guy.
Serve and volley is great. Probably the most stable stick I have ever hit with. Overheads feel really great. That said, you have to really move your feet. I get jammed easier on the forehand - it's just not as maneuverable.
I find my bicep really hurts if I don't get a good warm-up. Also, sometimes the back of my hand hurts from holding onto this guy, almost like carpal tunnel might feel. It's really hard to hang onto a stick this heavy for hours on end.
My team captain picked it up after our match last week, and described it as a "2x4."