I am a "wide-body". Even when controlling my eating habits, my skeletal frame is wide. I got really tired of seeing elbows and shoulders in 1/2 of my mirrors. On the '04 I bought the FZ-1 mirrors from Gary McCoy. On the '05, I have the EMGO.
I would not go back the the rear blind-spot. No cage/truck/CHP can sneak up on my "6". They don't buzz or vibrate. My right EMGO seems to not be as "positive" a lock in the extended position, but even that doesn't move about in the wind or because of engine vibration.
I let a fellow owner sit on my bike, then stood 10 ft behind him and asked if he could see me. When he responded, "Yes.", I asked him to turn around. He couldn't believe the difference. I live in CA and "lane share". I've never had a problem. If the cars are that close, I shouldn't be taking the FJR between them anyway.
I tried the "spot" mirrors on the stockers, and while they were an improvement, there is no comparison to the difference the FZ-1 mirrors have made for me.