I'm not an expert, not even close. I'm building a RAPID LED DIY now in strips, and here was my rational that led to my decision on the issue. The crux difference is CREE vs Bridgelux. Both are good LEDs. CREE (my research) are more efficient = better operating efficiency = less heat for the same or better light output. More watts doesn't necessarily equal more luminants. CREE had some much data available through their site, I felt the most comfortable, and in the end that was how I decided (gut check). Yea I left out a lot of detail, but I didn't save my research, so that was it in a nutshell.
I'm not replacing all my lighting with LEDs, just the T5's, so I'm not concerned about the whole spectrum. Most DIY builds on Reef2Reef, and RC, are using a combination between the two types of LEDs. I feel you won't regret either option, as the differences seem so miniscule to not make a difference either way.