I had pretty much the same question, only Im comparing the VX5 1-5 to the VXR 2-7. For me I guess sit really comes down to: How often have guys with 1-1.5 on the low end absolutely needed that 1-1.5 to make the shot? And could you have made that shot at 2x?
I personally feel im more likely to want to the top end magnification over the low?
I hunt deer in extremely thick brush where shots are typically from 15-90 yards. I like a 4x because it also works if I need to reach out across a clear cut when I hunt elk. I've never seen an opportunity where 4x was too much.
That said, I have very little experience hunting anything that can kill me. Others can fill in those blanks.
Okie John