They were both v2's as I had purchased the M60s and A/B'd with mojo's M80s which are v2's, I also did my own testing when my own M80's arrived, with the same results. I will say the difference is less noticeable at higher volume levels, ~80db and up, but for low volumes the differences were easily noticed, especially when A/B'd.
Mike, I still think you might prefer M60s over your M80s since you run them with resistors on the tweeters, unfortunately I have never heard M80s with the resistors to know how it sounds in relation to M60s.
