.NET Vs PHP

I am in bit confusing about choosing the correct language for a new project ( Focused on bulk e-mail handling)

Feature	.Net	PHP
Compiled Code – Increases website speed (precompiled is the fastest)	Yes – both precompiled and dynamically compiled when a page is requested	No – a 3rd party accelerator can be used to increase performance but it is not installed on most shared hosting servers.
Scripted Language – results in poor website performance	No	Yes – a 3rd party accelerator can be used to increase performance but it is not installed on most shared hosting servers.
Object Oriented – Increases the ability for code reuse and provides enhanced features as well as reduced development time; since code is more reusable, results in fewer bugs that can be discovered by any client and fixed for everyone; encourages developers to write more maintainable code.	Yes	No
Supported Development Languages – easier to find developers	C++, C#, Visual Basic.NET, Jscript.NET, Python, Perl, Java (J#), COBOL, Eiffel, Delphi – 25 languages supported currently	PHP
Browser Specific HTML Rendering – different HTML is automatically sent to IE than to Netscape, reducing incompatibility issues	Yes	No
Open Source	No	Yes

Any comments you guys ..!!