About a year ago, I was looking for replacements for the bulbs in our church hall. Mogul base,
used to be 500W, had been downgraded to 300W. (power cost)
Ordered 105W, 5000K, 68 lumens/watt from 1000 bulbs. After a year, functioning without flaw,
and everyone can see again.
Did have to order 12 to get the good price, but a few spares is usually a good thing.
The process with 1000 Bulbs went without a hitch.
Based on this one order, I would recommend them.