I think you should make your decision between OLED and LCD first. Each has there pros and cons that offer different benefits and downsides.
If you choose LCD, the XG9505 from the refurb store won't be beaten for value for money for some time, probably as long as spring next year.
Oleds are generally way more than my budget. The advantages they'd give me are better viewing angles which I can compromise on and a better viewing experience in the dark, but I like to view during the day as well.