Typically, larger CFLs produce up to 65 lpw (lumens per watt)
54 watt T5 tubes produce 92 lpw (they average 4500-5000 lumens).
4' T8s avg. 90 lpw, and 34 watt T12s about 84 lpw. Much more efficient lighting, from the tubes. However, the pro of the CFL is that it is "compact" and all the lumens are in a smaller area and easy to keep close to the plants, which keeps the lumen losses very low. 4' Tubes are better if you can fill the area with plants and keep them close to the light. I use tubes for top and side lighting with good reflectors and mylar all around.
From another economy point, it's costing me $9/lamp to change my T5s to 2700K for flowering and less than $2 for my T8s. The 105W -200W CFLs cost anywhere from $12-$80 ea. I just picked up a few 23W at the hardware store for $.99 ea. (Not for growing, I use CFLs almost exclusively around the hut and office.)

Shov