Hi Guys
I have a client who ranks well within a competitive sector of the travel industry. They are planning CMS move which will involve changing from .cfm to .aspx

We will be doing the standard redirects etc

However Matt's statement here on 301 redirects got me thinking
http://www.youtube.com/watch?v=zW5UL3lzBOA&t=0m24s

He says that basically you loose a bit of page rank when you do a 301 redirect.

Now, we will be potentially redirecting 1000s of links and my thinking is 'a lot of a little, adds up to a lot'  In other words, 1000s of redirects may have a big enough impact to loose some rankings in a very competitive and aggressive space.

So recommended that we contact the sites who has the link highest value and ask them to manually change the links from cfm to aspx. This will then mean that there are no loss value as with a 301 redirect.

-But now I have another dilemma which I'm unsure about.

So the main question:
Is link age factor in rankings ?

If I  update any links, this will make said link new to Google, so if link age is a factor, would this also lessen the value passed initially?