I would agree with you, 60i can look ugly. If I were shooting a movie for theatrical release on film--I might prefer another camera.
I think there is a lot of confusion about what all this frame rate stuff means, what effect it has on the image and what ways there are to work around it.
For those who don't know, 60i means 60 frames per second (fps) interlaced. 24p or 30p means 24fps or 30fps progressive. Interlaced means that all the odd lines are scanned and then the even. The result is a double image and a very video look. In progressive scanning, all the lines are scanned in sequence--resulting in a more film-like look.
In the tests I've done, shutter speed(1/60s. v. 1/24s.) does not affect the image that much as far as a film look. (The minimum shutter speed of an Arri SR2 running at sync speed is 1/48s. A bolex's slowest speed is even faster.)
But I do think there is a problem with shooting 24p over 30p and 60i when outputting to a TV. In my experience, it looks very strobey--which has to do with the 3:2 pulldown needed to get 24p back to 30fps so you can watch it on TV. Since you don't need 3:2 pulldown when shooting 30p or 60i, it doesn't have that effect. Unless you are transfering to film, there is no need for 24p.
I do think 30p looks better than 60i. The FX-1 does have a 30p setting, burried deep, deep in the menus. I imagine its a de-interlaced 60i frame, but the result is a rendered 1080/30p frame that looks as good as a 720/30p frame and still has a higher resolution. For various reasons, tho, I prefer to shoot 60i and de-interlace to 30p in post--which is another option.
My issue with the HD100 is that it's not as practical for me as the FX-1. If I wanted to use a fisheye with the HD100, it requires buying a whole huge lens for almost the same price as the camera. I like having a cheap(er), smaller adapter. The HD100 weighs almost twice as much as the FX-1 (not including the additional heavy lenses) which means a lot when I'm climbing through waist-deep pow at 12,000ft or skiing tight trees.
As I understand the Panasonic AG-HVX200, it only records HD to a P2 card. A 4GB P2 card holds 4 minutes and costs $600. Panasonic needs to work out some kinks before I buy that one.
Bottom line--you probably don't need HD if you're just going to make web videos or not going to try to get a distribution deal with Ally. All the sub-$10,000 HD cams have certain advantages over the others. My opinion is that the FX-1 is the best suited for ski films and has the best quality to price ratio.