Differences between SQL 2005 Editions (Ent vs Std)

Is there a detailed whitepaper or something, listing differences between the SQL 2005 Enterprise and SQL 2005 Std editions We're trying to develop something for Std, but it appears that the Developer Edition parallels Enterprise. This puts us at risk of developing something using a component which will not be available.

For example, I read somewhere that clustering and "advanced ETL" were the differences. First of all, we really need to break down the meaning of "Advanced ETL". Second, that list was not complete; I read somewhere else that data-driven subscriptions aren't available, and it turns out that might be a showstopper for us.

We need to give a definitive recommendation by Friday 2/24. Can anyone point me in the right direction Writing a bunch of stuff and then testing it (months later) on Std is not an option.

THANKS!