As far as lighting x vs lighting y debates, I think it's always going to be a matter of personal opinion - no matter what. Every type of light has it's ups and downs, it just depends what light fits your needs.
Pros - Very intense light, great penetration, decent range of bulbs/spectrum.
Cons - High energy consumption, high heat output, some bulbs can be costly, typically replace bulbs 6-12 months.
Pros - Intense light, good penetration, more bulb choices than you can shake a stick at, great color range/bulb combos.
Cons - Bulbs can be expensive to replace especially the more you have, 6-12 month bulb life, generates some heat.
I'm sure there are tons of pros/cons of each, but that's a general idea. Right now T5ho are my personal favorite. Like i said, that's completely personal preference though. Both of the lights will grow a mean planted tank given all other requirements are met.