Hi,
There's a bit more to it than just choosing some tables and diving. DIR is about using the correct ascent rate, making your "safety stops", staying physically fit, and much more. Those are equally, if not more, influential to decompressing than any "table choice."
That all being said, the tables one chooses is based on the previous factors as well as one's experience and training (education). If you have been trained using the PADI tables, then by all means, continue to use them. Combine them w/proper ascent rates, good buoyancy control, proper physical conditoning, and making your "safety stops" and your moving in the right direction.
As you continue to gain experience and education as well as a better understanding of the process of decompression, then you can make informed decisions and choose the tables based on what you believe works and not what folks on the Net tell you to follow.
Answers on the Net regarding these types of questions (looking for that "black & white answer) leave out a TON of what is taught at GUE and seem to be the root of many of the squabbles, inconsistencies, and misinformation that seems to permeate the discussion boards quite often.
What I am getting at is that if you are genuinely curious about the way we do things, you cannot get it here. Please contact a GUE instructor and take a class. If you're just trying to stir the pot, well good luck but suffice it to say that it's highly unlikely that anything good will come of that in the community.
Good luck and safe diving!
Best Regards,
brando