SPEC is a totally different animal from the regular SOC series. Firstly, SPEC has less die-cast (only the ankles, feet, most of the leg armor and pectoral portion of the chest armor), the armor is removable and they are, imo, the most articulated EVA figures around, even more so than Revoltech EVAs. They're about 7 inches tall so thay're larger than regular SOC EVAs and have more accurate details and colors.
I think the weapons included about covers all the weapons used by EVA-02 in the TV series save for the pallet rifle so I think it's a pretty good selection.
The reason I prefer the Rebuild SPECs over the TV version is that the armor and arms have been resculpted to be more refined and streamlined. Rebuild SPEC EVA-01 was an improvement in design over the TV SPEC EVA-01 (especially the new "sexy" prog knife design and deployment system) so I'm willing to wait for Rebuild SPEC EVA-02 and pass on this one.