There are probably things you could do to get more out of 3.5, but 4 is waaaaaay, way better for every complex thing I've tried. 3.5 was helpful on some margins

There are probably things you could do to get more out of 3.5, but 4 is waaaaaay, way better for every complex thing I've tried. 3.5 was helpful on some margins when I remembered it, but 4 is a huge part of my workflows now.