PHP5 or PHP5 (fastCGI)

I am setting up a new site on BlueHost Shared Hosting. They give me 3 options for PHP. PHP 4 which I will rule out and the following with descriptions.

PHP5
All files with the extension .php will be handled by the PHP5 engine.
Current, most reliable and best performing version of PHP
PHP5 (FastCGI)
All files with the extension .php will be handled by PHP5 FastCGI processes.
FastCGI for PHP makes all your PHP applications run through mod_fastcgi instead of mod_suphp. This eliminates the overhead of loading the PHP interpretor on every hit. Since it is always in memory ready for the next hit, the responses will be generated faster.

Any preferences?

JOhn ><>

They are a "Certified" Host and should be able to advise you