I have about 24 T8 tubes in something a little bigger then a two car garage. That and a couple of 500 Watt Mogual base Eddison bulbs that I rarely use. They are original lighting.
The fixtures were cheap, two tube units on sale at TSC. Not sure I would use them again, but they have not failed me yet. They are failing, one by one where I put them in at a friends welding shop. They are used everyday for long days! Or is it the welder spikes killing them?
I have just built a 28 X 72 Foot drive shed and am not sure what I will use. It actually has been two years and I just have not needed to do anything in the dark in there. There IS temporary lighting. Six more of those cheap TSC T8 fixtures.
Recently I have been using the vapour tight fixtures. I used some in a new wood shed. The bugs don't get into them and you can clean the lenses quite easily. They are kind of pricy, but I would like to use them in my drive shed. I would want lots and lots of them! I like LIGHT but this will be a very costly project.
I installed them at a friends place. Another welding shop, and I upgraded all the ballasts, in these brand new fixtures. He likes to listen to the radio, and many cheap ballasts give off piles of RF interfereence! Bit of a PITA, but they didn't stock the vapour tight fixtures with the better ballasts.
Another (you guessed it) welding shop buddy just replaced his eight foot fixtures with large reflectors from warehouse style commercial lighting to which he added sockets and very large spiral CFLs. One each per reflector. Didn't work out too bad for light.