ALM 11.5 -- SQL Server 2008 R2 -- Standard or Enterprise?

I am thinking about having ALM 11.5 at home (trial version) and trying to figure out cheapest possible setup ... I have Windows Server 2008 R2 already so SQL Server is the only thing missing

The documentation I checked did not mention version of SQL Server 2008 whether it works on Standard or Enterprise so wanted to ask can I run ALM 11.5 on Standard or (even) Developer Edition?

Cannot afford to buy SQL Server Enterprise :-(

Thanks!