I am going by what I have heard and read about as I have never worked with T5's.
The T5's take up less room and tend to run cooler than PC's. They put out slightly more light per watt than PCs as well. The downside is that the bulbs cost a little more to replace and are not as widely available in as many spectrum options.
If you are going to use them for actinic only, I would personally go with the PCs for cost reasons but either way, you should be fine.