I converted my shop to LED fixtures this year, the difference is amazing.
On the high bay ceiling (14 feet) I removed the T-8 fluorescents and installed new strip LED. The old fixtures were moved down to the wall surface and installed apx. 8 feet off the floor and replacement LED bulbs installed, did not need to replace the ballast.
The energy savings in itself make switching to LED a good move plus the increase in light level is a real plus.