Just realized I answered this purely from a 2-channel audio perspective since we're not in the home theater forum area. Considering this looks like it'll also be used for home theater I think the idea of mating 60s with a sub makes a lot of sense (you'll need a sub for HT anyway, regardless of which model you choose). You could get the 60s (or maybe even the 40s or 20s) and something like a Hsu STF2 subwoofer and potentially be much better off overall. You'll have deeper and even more impactful bass for movies and probably a better and more full-range bottom-end foundation for music as well. Plus you get the flexibility to place the sub where bass can be optimized for your room -- something you can't do with tower speakers alone.
I'd let your budget determine which version to purchase. Yes the v4s probably offer some improvements, but I highly doubt you'd be unhappy with v3 or even v2, and if it allows for less financial stress or even a better subwoofer you might be better off. I'm thinking for the same money as the 100s you could do the 40s with something like an SVS sub or 2 Hsu subs (if room allows) and have some pretty serious full-range performance for both music and movies. The possibilities are endless, and maddening.
Best of luck.
I'd let your budget determine which version to purchase. Yes the v4s probably offer some improvements, but I highly doubt you'd be unhappy with v3 or even v2, and if it allows for less financial stress or even a better subwoofer you might be better off. I'm thinking for the same money as the 100s you could do the 40s with something like an SVS sub or 2 Hsu subs (if room allows) and have some pretty serious full-range performance for both music and movies. The possibilities are endless, and maddening.
Best of luck.