I've never used either editing software. I also have a MacBook Pro. I would highly recommend Photoshop CS4 or Lightroom.
-El mommy to B & A
Just chug-chug-chugging along.
I use Elements 7 and I really like it. I know Sadie uses PSP and she's had some frustrations with it. I think there's a LOT more out there in terms of tutorials and actions to support Elements than PSP.
Gwen, Mommy to Andrew, Jordan, Natalie & Jack
My blog - all things family, photography and crafty
I have CS4 & Lightroom like El and would recommend those, but I agree with Gwen too. There's much more out there to support Elements of the 2 you're deciding between.
Kristen & Donnie, 2005
Jackson Thomas, 10.08, & Colby Jameson, 5.11
Kristen Privett Photography