I did four sets of high output T5 bulbs, 2 bulbs per set and they are great at lighting up the garage for my work. However, if I had to do it again, I might consider adding in some can lighting that could be used both in tandem with these or even by themselves perhaps with different temperature and style lights that would better show swirls. That said, I still find a good set of LED"s or halogens on stands that can be adjusted are best as they can help light up everything from the lower rocker panels to the doors to even the roof and hood when adjusted higher up.
My garage is 24x24 with 10ft ceilings and combined with my door opener, here area couple quick pics I have online showing how well they light up the vehicles.
Photo 1
Photo 2
Photo 3
Photo 4
As you can
see here however, lights on stands are
priceless to me.