I am new to Cruzbikes so what is a V2/K. Is it between a Qx and a Silvio?
It is a legacy frame-kit, no longer offered.
Way back when (I think I bought mine in 2009), Cruzbike offered a "conversion kit" that would convert a fairly common Y-frame MTB into a Cruzbike. After a very short while, the most appropriate of the Y-frame bikes got very difficult to source and Cruzbike decided to offer their own frame to match the original kit.
The V2/k is no longer available. They're very nice bikes (I have two) and offer hot-rodders like me a very good (and inexpensive) basis for building up a bike.
The new T-50 basically takes its place in the lineup...although it has no suspension and is also offered as a complete bike as well as a frame-kit.