I haven't had any issues with the mirrors being sub-par or anything. The blind spots took a little getting used to, but that's it. I prefer the "I'm driving past you so I know I can get over now" lane-changing technique.
lol
I got in my gf's 07 G35 coupe for the first time since I got my Z yesterday. I had no idea that the mirrors on it were so much smaller than mine. I believe the width is the same, but they are a whole lot shorter. Less blind spots in that car though, so it's a trade off.