It's a matter of personal taste and opinion. Scale matters if you want to have all your toys "in scale". The VF-1 fighters were smaller fighters in comparison to the VF-0 and SV-51 enemy fighter planes. I personally like the larger 1/48 scale VF-1 planes which are actually about the same size in scale to the 1/60 scale VF-0 fighters, but this puts my toys "out of scale". Again, it's all a matter of personal taste and how important it is for the person collecting to have all their toys in the same scale. Scale doesn't matter to me because I started collecting out of scale because the 1/48's were the best version of the VF-1 fighter available when I got into the hobby. If I was just getting into the hobby I would certainly buy everything "in scale" since the v2 1/60 scale VF-1 fighters are much better looking and more detailed than the v1 1/60 scale fighters. They appear to be "scaled down" versions of the 1/48 VF-1's without losing any details; if anything they look at little bit better in their different configurations compared to the 1/48's. You will get many answers on your question, but this is one many opinions you will see.