How can I provide a common AVS Forum post link for both visitors and members logged in?

In referencing a particular post in the forums and providing a link, I noticed that the link changes depending on whether I am logged in or not.

For example, in my reply in this thread, I had to give 2 separate links to the same post, so that at least one link would work whether the viewer is logged in or not.

In other words, a particular post apparently has two links, depending on whether a person is logged in or not, such as:

http://www.avsforum.com/t/1000259/panasonic-px80-owners-thread/5730#post_21687624 ---> if not logged in
http://www.avsforum.com/t/1000259/panasonic-px80-owners-thread/5700_100#post_21687624 ---> if logged in

Try these links while not logged in, and logged in, and you will see that only one link to the post works, and the other link doesn't work, depending on if you are logged in or not.

This appears to be especially problematic if there are multiple pages in the thread.

How can I provide a link to a post, that will work whether a person viewing the thread is logged in or not? Is there a common link that will work for both situations?
Edited by tomwil - 8/17/12 at 6:15am

I hope I can be a little clearer. If a thread has only one page, then it does appear that a link to a particular post in that thread will work.

However, linking to a post in a thread that has multiple pages, as in the example I gave above, seems to display the problem.