hello fellow michigander, what city do you hail from? i am 30 miles south of Alpena, a small town of Mikado. about your conflict about cert. agencies, i am padi certified as is my youngest brother. however my middle bro, is idea certified and he just returned from palau, and he had no problems getting any recognition from the dive resort. when he was first certified a few yrs back i showed him my padi OW book and he was impressed with the content, as his agency did not go in depth as much as padi. but none the less he is an excellent diver that i would count on in an instant. he is getting ready to take idea's version of the divemaster and while i have no idea about the course content i would imagine that the course will still be stressing the same points as the padi divemaster. his instructor is dual certified in idea and padi so i imagine there will be some cross training, but he will get the best of both worlds. he lives in Grand Rapids,Mi, and is going through DIVE ZONE for his next course. well i hope i helped ease some of the differences, i don't believe you will have any prolems with either, its just a matter of personal choice. so,, get wet and have fun. sam