Originally Posted by
TejanoTrackie
For all intents and purposes, maybe.
But the model "V" is compared to the Eco as
The durability [of the V] is more than 3 times as much as that of the standard type [the Eco]. This is the finest grade track racer chain, and keeps running stably over a long period.
http://www.izumichain.co.jp/en/product.html
Unless you are a really big guy turning lots of torque, the Eco is fine.