n25,
it isn't great to be an ACE, it's worth nothing. believe me, i got this cert two and a half years ago and it's just a meaningless piece of paper. it doesn't give you any respect and it doesn't mean you're a real expert, it just means you've spent a bit of time passing stupid avaya exams to get that meaningless "certification". big70 is right, i know he is because three years ago i've acquired cisco ccnp cert and THAT was REAL PITA to get, believe me. i had to pass four (!) exams to get one (!) cert and oh my those exams were hard, i had to sweat real hard to pass them. after that, passing avaya exams was like nothing compared to cisco's, a child's play. and expert level cisco exams are VERY VERY hard to pass, i know some people who tried many times and failed. in my previous company they hired a cisco guy (ccnp then) whose job was to became ccie. he did nothing but studied and tried and rehearsed for half an year, after that he did pass ccie exam but still he was saying it was pure luck he passed.
compare that to avaya "expert" and you'll see it's worth nothing.