If only I had seen this thread before posting about mobile operating systems in my post over at the best OS thread.
Without a doubt the best phone OS right now has to by Android.
I have been developing custom ROMs for this OS on my HTC Hero since I first got the hero and started customizing it.
The beauty of android is that it is whatever you want, and with Google behind it, it's really impressive some of the things they have thought of and made really nice touches to.
On that note, mine being a HTC Sense enabled device, HTC also deserves kudos for possible THE single best custom android builds I have seen from any device manufacturer to date.
HTC has really come into their own since starting to release under their own name and theyre definately ticking a lot of the right boxes these days.
After the security and performance hassles I had with Symbian on devices from the 6600 to the N97, and the slow, horrible performance and terrible design of Windows Mobile 6.1 to Windows Mobile 6.5 (for which I also developed custom ROMs on the Xperia X10. I have never been more content with an OS and would happily take a slight upgrade of my current phone any day, which HTC have blessed me with in the HTC Legend, essentially my phone minus the weaknesses (flash, trackball, case).
I outright refuse to accept a suggestion of a better OS than android (although I admit it's far from perfect). :tongue:
P.S. I owned an iphone which ended up costing me around £500GBP and was so annoyed, irritated, frustrated, occupied and distracted by that I ended up giving it away for free just to get it out of my sight. It was worth giving away £500 to get rid of that thing cause no gadget has annoyed me to the point of physical agression before, and probably never will again.