[jQuery] Radio Buttons and .val()

[jQuery] Radio Buttons and .val()

Hello,
I am using the following to grab the value of a radio button:
str = $("input[name='addType']").val();
The XHTML for the radio button is as follows:
<label for="add-type-1"><input type="radio" name="addType" id="add-type-1" value="prem" />&nbsp;Premium</label>
<label for="add-type-2"><input type="radio" name="addType" id="add-type-2" value="std" checked="checked" />&nbsp;Standard</label>
Even though the second radio button is set with the "checked" attribute, the jQuery snippet above always returns the value of the first radio button.  I am obviously doing something wrong (again), but cannot seem to pinpoint the error of my ways.
As always, thanks in advance for your assistance.
Matt