I can currently use iTunes to sync info (contacts, calendars, mail accounts and safari bookmarks) on one mac and sync all other items (ringtones, music, photos, podcasts and video) from another mac. While this is ostensibly manageable, I find that I sync music etc at home in the evenings, but Podcasts throughout the day, whenever my laptop is online - iTunes subscriptions are good for that. This means when I sync my music (home machine), I wipe all my iPhone podcasts which have been synced after quietly seeping into my laptop. Inevitably I only find out when I'm already on a train, with time to soak up the seepage.
So why do I have to connect to one or another mac? Why connect at all? My mail is collected by my iPhone directly from .Mac, no wires, no messing. Just let .Mac soak up all my tabbed resources from iTunes and deliver whichever tab I require to any of my authorised devices, wired or wireless. I can save local drive space AND have my info/music/audiobooks/tv shows/films delivered to where I happen to want them. Now that might well be worth the subscription. Just get me a Flash-like player for all that video and nevermind the bandwidth or better still get me an Apple version Flash-beating video streaming codec with stunning compression and forget about the bandwidth.
[UPDATE] It seems some of my reflections were not all illusions. Push data from Apple and SimplifyMedia have provided more, but not all of the above features. At least SimplifyMedia means iPhone memory is of little consequence within a wifi environment - as much music as I can store on my home mac, all served and searchable in a pocket sized 8gb.
