"I have only shot in 1080p60 mode with my TM700 and have viewed my videos on all four of my 1080p HDTVs using the TM700 HDMI output with the included remote or on my PS3 with SD slot that plays the 1080p60 files great with slo-motion that includes audio in slo-motion. I also have my Mac playing 1080p60 video using Windows 7 Media Player 12. Playing my 1080p60 videos in slo-motion is fantastic and is the future today."
That's great! Yes, you can play clips, or clips edited in the camera (using a 3.5" screen!), using the TM700 as a player attached to a HDTV. Playing 60p videos on a computer to a computer monitor is not a way of enjoying the highest resolution of video, however. You can also play the 60p clips on the PS3 attached to a good HDTV. That is great.
But you cannot make a bluray disc that will play on a blu-ray player without transcoding, and reducing quality. This is only important if you want to share your edited videos with friends, many of whom have blu-ray players (including the PS3). I am happy to send them or give them a bluray disc with my edited videos to share; if they have a PS3 and I only have 60pvideos, however, what medium am I going to give them? my sd card? a usb drive? lend them my camera? Kind of expensive. Downloading is not an option, the files are way too big.
You only get the highest quality on the TM700 using 60p - the 60i is crippled at 17Mbps - with all of the current limitations in use. 60p1080 is a hassle, and whether it is that much better looking than the HM1 60i (at 24Mbps) is not obvious. Slo-mo tho is a great feature, and a real advantage to progressive.
108060p may be the future. That future, however, is not now for broadcasts, for blurays, and for most high-end editors (meaning you cannot smart render so there is no quality loss).