I have a 5F1 clone in Deluxe cabinet naturally with 12" speaker. At this side of the pond selection for 4 ohm drivers are limited. First I installed Fender (by Eminence) speaker. I liked the sound a lot. But as you know soon you are wondering if the grass is greener on the other side. I have an external 12" cabinet for my SCXD which has Eminence Texas Heat inside. I found a 4 ohm version of Texas Heat, so I tried it, but with 5F1 the original Fender sounded for some reason to my ears better.
But now when I read this tread more carefully I found out that you have more impedance choices with your OT.
They call me debris.