I still use the PADI Dive tables but totally agree that you need to have a good standard of tuition to enable you to understand the tables and work with them properly. At the end of the day it is still the individual diver and their interpretation of the PADI Dive Tables. Make sure you have proper training prior to using the tables so you really know what you are doing. For those that are at a proficient standard and use the tables regularly i found a good copy of the PADI Dive tables at this blog: http://divingholidaysmalta.blogspot.com/
They also have some interesting articles on NAUI and comparisons with the PADI dive Tables if you are interested.