The SOC Evas are really nice toys. Super poseable and Diecast body.
But they do have some issues, mainly the paintjobs. Some people complains about the Eva 01 metallic finishing (wich I LIKE A LOT) the Red on Asuka´s unit is the worst IMO, diferent shades of color, and... not nice. The blue one is totally nice.
The Kaiydo ones have some Superb paint job, the metallic ones are super nice, but still, those are beautifull PVC figures (I hate cheap PVC), not as poseable as the SOCs.
Still, the Kaiyodos are great pieces to collect and cheaper than SOCs.