OP just pick one and run with it. You probably couldn't tell the difference in the options that you've been given. Ported or sealed is an entirely different story. Just because it's ported doesn't mean it isn't SQ.
Agreed for once, lol. A properly tuned/sized ported enclosure will have very low group delay in the listening range and be much more efficient.
Sealed are definitely eaiser to EQ and model and build, but if you have the time/money to build a few ported enclosures and change volumes/tuning you can get a very good sounding and more efficient substage.
Matt