I really don't think you are going to be able to justify the expense on energy savings alone. I have found that tenants DO get excited if LED ($$$$) fixtures are utilized however. If glare is the problem then gaining energy savings AND esthetics using LED's might be a worthwhile look. Long term maintenance factors are a significant factor as I'm sure you are aware.
(Your link to the fixture was cut off a bit.) Good luck! Let us know what you decide and the results..
May 2, 2013