I used the Wix kit and it had a rubber gasket.
For the money, it's your choice as it sounds like either will do the job.
Be very careful putting the bolts back in. Others have snapped them by over-torquing. Before I dropped my pan, I bought a ¼†drive torque wrench that did inch pounds. I'm having trouble finding the torque spec for your pan- I used 48 inch-pounds on my AWD.
Found this post on ToyotaNation:
http://www.toyotanation.com/forum/132-9 ... ement.html
You can replace the strainer if you want- it's what comes with the FWD kit.