We have these installed in the shop 13 ft up and I really like the 4100k, they are a great shop temp.
Work can be done safely without being blinded, also tried the 5000k but it was way too bright for us.
Howard Lighting F54T5/841/HO 54W T5 High Output Linear Fluorescent Lamp 841 4100K\
https://www.shineretrofits.com/howard-lighting-f54t5-841-ho-54w-t5-high-output-linear-fluorescent-lamp-841-4100k.htmlThe Howard Lighting F54T5/841/HO is a high output T5 linear fluorescent lamp. The lamp emits 5400 lumens of light while only using 54 watts of power. Enjoy a high color rendering index of 85 and color temperature of 4100 for an average of 30,000 hours