I never had a S/Amoled screen before but what I have with me on the DHD is definitely top class, even at 36% brightness. I still need to test it in sunlight tomorrow morning but unless I, say, look at an SGS/ Nexus S I would blissfully believe that this is the best screen out there

.
But the build quality is awesome. I can confidently tell my parents I spent 30k on it without explaining Android to them

.
Yup the software is the latest version; pre-installed - Pleasantly surprised.
I am normally a patient person and would wait if there's an expected price fall but my Sony Ericson charging pin failed making it completely useless. Hence, I made the decision. But come Jan 2011, I guess there is a lot to look forward to. So, it's up to you whether you want to wait or not.
Also, I don't think Expansys stock will run out anymore. Looks like HTC have the stock issues settled. Personally, I don't trust LG and just specs don't make the phone. Hence, I am very happy with my decision.