I don't like the antenna, especially the V4.5 star and the V5 chimney-thing. It's too pointy so it snags on the lining of my pockets. I cut it off mine, filled the hole with epoxy resin, then sanded, painted and polished it a bit. Now it looks like a V2.
On the other hand, two friends of mine got V4s recently, at first they thought they would like to cut off the antenna, but they changed their minds because they liked to hold the tamas by the antenna.
I guess it's a matter of personal taste. For what it's worth, I still like best the smaller, sturdier form factor of the original P1/P2 ancestor tamas.