Creating a custom HTTP Module Vs Using Rewrite Module

Hi Guys,

I am still hesitating between creating a custom HTTP Module and using the IIS Rewrite Module 2.0 for redirecting URLs stored in a database. My table looks like to

OldURl, NewUrl, RedirectType, UseExactDestination, Excludesubdirectories
a.html b.html 301, Yes, Yes
1.html 2.html 302, Yes, Yes
1/a.html, 2/a.html, 301, No, No
...

Use Exact Destination - determines whether requests are redirected to the exact destination instead of relative to the destination, default True.
Exclude Subdirectories - determines whether only requests to content in the From directory are redirected and not requests to its subdirectories, default False.

So in those cases, I want to redirect a to b using a 301 permanent redirect, 1 to 2 using a 302 Temporary redirect, 1/[ANY PAGE].html to 2/[ANY PAGE].html etc. etc...

In order to get rules for 301 redirects only, then 302 redirects only etc etc I can create multiple stored procedure and create a rule for each possibility. What do you think about that? Do you have any advice, trick, existing rules that might help?

Thank you