I sure hope for you that you will not base your decision on what we have to say on this site.
You will occasionally get a genuine advice, even at times based on a robust set of facts but more often than not you get the above.
You can only be wary of people who make grand statements such as the quality of staff and work is poor.
It is a firm with over 140,000 employees in over 140 countries - if the standard of work was poor, it would not be that successful.
So here are my facts:
Far more global than its [big 4] peers due to its regional structure
Projects are abundant but as always it depends of your service line - areas of strength for EY are Finance and procurement/ supply chain as well as transaction services
Culture is far more empathetic to personal circumstances than ACN for instance
EY strategy is to position itself in between corp strategy [MBBB] and implementation [cap, ACN].
Advisory is fast growing [faster than a lot of its peers e.g. KPMG] and therefore appetite to promote rapidly and recruit is high
overall a good place to work. a lot of people are ex ACN, MBBB, PWC
No matter what you hear, the best thing you can do is meet people from each firm you are interested in joining - then make your mind up