I for one hate the 60i look; it just screams "VIDEO!" and IMO the quality goal should be to reach the level of film just like digital projectors goal is to reach CRT level.
I always use progressive mode over normal 60i mode with my current older digital camcorder, because it looks about a hundred times better aesthetically to me. 60i looks TOO fluid and too videoy, which is the worst look in the world if you're into filmmaking. That looks makes me want to burn the footage to be honest; it just screams "home video" due to the hyper realistic motion. Progressive mode looks pretty strobey on the LCD monitor, but it never looks that way through the viewfinder or when played back on another display.
60i looks simply terrible to me though. I'm into filmmaking and 60i is the worst offender when it comes to giving that terrible Live News video look. It's just plain ugly. 60p isn't much better; It's great for slow motion though.
Too each his own I suppose. 60i/p is fine for shooting nature stuff or even regular home videos, but a big big no-no for movie making. It simply doesn't look fantastical enough. I noticed when looking at actors perform their lines at 60i versus 30p it's like watching an actor read lines versus watching a character in a story. 30p or 24p adds that more surreal movie like aesthetic, whereas 60i makes you feel like you're watching the news or something.