Over the last few weeks I have heard a lot of people complain about the HTC TyTn (and more so these days with the new iPhone out now). But the phone itself is not bad – but if you are still running Windows Mobile 5 on it then sorry you don't get the rights to complain – that OS itself has loads of issues. So, if you are like me with a TyTn I would suggest you get on a Windows Mobile 6.1 ROM and get some peace of mind. I am running the 'Diamond Look-alike" Mobile 6.1 ROM and it is rock solid – I highly recommend it. I have been running it for a few days and am very impressed.
On a somewhat related note, if you were thinking of getting a Diamond from Expansys, I would hold off as all of their phones are imports and technically grey market imports which HTC does not and will not support. But despite Expansys, why would anyone pay so much more for a HTC Windows Mobile, when you get a similar spec'd iPhone for much less?
Shame on Expansys for selling them as "UK" phones.