Unless color fidelity is important to you, I don't think color temperature plays much of a role in visibility per watt as your article suggests. Bluer light isn't brighter light.
I wish I had the link, but there was a very informed thread on Garage Journal about the introductory and ongoing costs of LEDs vs modern T5s. The T5s blew the LEDs away for everything but years of all-day use.
This was a year ago, and obviously I didn't absorb the details, but I would run real numbers before committing to LED. They're neat, but some of them are of dubious quality, and (unlike simple incandescents and florescents), the difference in high quality and low quality fixtures is dramatic. I'd be pissed if unreplaceable LEDs started burning out in my ceiling.
I went with standard 50w LED bulbs, but only because I didn't want to deal with installing T5 fixtures in place of the four standard fixtures that are already installed. I wouldn't recommend this route unless you're avoiding this work, but it's nice to get 300w brightness at 50w power draw with standard fixtures:
http://www.amazon.com/gp/product/B00F9G97JA?psc=1&redirect=true&ref_=oh_aui_search_detailpage
I didn't know they sold LED replacement tubes. That's neat. Maybe I can finally get the storage room in my building to stop flickering like a scene from Resident Evil...