I have had an M600i for about 7 months now.
This is an excellent device. I have been in the computer busines for about seven or so years. Gadgets no longer impress me. But this phone does.
It is more a mini-computer than a phone. Its G3 access to the internet means that I can research all kinds of stuff almost anywhere. I need to know something, I use the Opera browser that is on the M600i. By this alone the phone has paid for itself.
I can touch type so I easily got used to the layout of keys on the M600i. The keyoboard layout is an excellent design, so good that I have never used the character recognition application. I can add notes, write stuff and keep of track of things to do easily and quickly. What is more, the predictive text system in the M600i can save me so much time that writing with the M600i is not much slower than with the keyboard.
And then there is the music. This is very good. Especially when adding in a small portable amplifier to give some bass to the sound. For a while I had a gigiabyte M2 chip in the M600i and that meant I could have my choice of about a dozen albums. I bought a 2GB one recently but have been too busy to add tracks to it.
And it is reliable. I haven't updated the operating system. Yet the phone has only frozen three or four times so far.
Oh, and it is fine as a phone and for texting. But you'd expect that.
I also like the fact that the M600i will charge while connected by USB to a PC. Very useful.
Then you have its ability to read and write in Word and Excel, its ability to read html and pdf files. These all add to its usefulness.
And finally, it looks good and easily fits in a pocket.
But it is not perfect. I would like a faster processor and more memory to handle the applications when they are running. It gets a little slow sometimes. The predictive text in the word processor can get painfully slow after 1000 words or so. So basically it needs more power. But this should be kept in context. I have sat wiith a colleague who has an old pentium pc that he still uses. It has a similar processing power, memory and hard drive to my M600i and it is a huge desktop thing.
So, the M600i - highly recommended.
Best,
Bob