My take on the two is that Ecsta is more of a track or street/track tire that can be run in the rain. It is a real tire in that the sidewalls do something like a real street tire. It is probably easier to drive. I don't see them laststing longer like it is claimed that they should.

The Victoracer is a racing tire as closely disgusied as a street tire as possible. They have very still sidewalls, designed to compensate for production based cars that don't have enough camber gain or static camber built into the suspension. They are a little tougher to drive well, but ultimately a faster tire.

I personally would chose the Victoracer, but it very much comes down to personal preference.