Firstly, the hardware on this phone is very good. Despite already being at least 6 months old, the specs are comparable to the current high-end smartphones available.
It does everything you want it to and despite reports of software faults related to the camera and text messaging, HTC release updates not soon after I bought it on New Year's Eve so I've not had any problems.
The software itself is surprisingly customisable. Thanks to a website called XDA-developers, you can download apps, alternative user interfaces as well as improved software for the phone. When I first got this phone, I didn't understand why Windows Mobile was getting such bad rep but I did see that, despite working well, it doesn't get much support from a lot of companies so professional apps aren't as widely available Android or iPhone.
I would recommend this phone if you can get a good deal for it but if you're starting a new phone contract, I'd more likely head towards an Android powered HTC phone but it's a great phone none the less.