Siskin/Finch ID-Challenged

If these guys would just come around on a regular basis, I'd be much better at ID'ing them! I cropped and enlarged these pictures and figured out that the first three are Pine Siskins. You can barely see the yellow coloring to their wings. The third picture seems to be the best view. This is my 2nd sighting of the PISI this season .... yes I am worthy ;~) It seems there was a pair of them "beaking" in the tree. I thought they were just a winter bird here ........ could they be pairing up before they head north?






Then I looked at the picture below and saw something different in the top bird. See the eyestripe? Could this be a female Purple Finch?