I always use the Harbor Freight 50 tooth, for two simple reasons. The cut is very good, both rip and crosscut and its one fifth to a sixth the price of the Forrest WWII. I just resharpened one on the HF saw blade sharpener and it cuts even smoother.
That being said, yes, the carbide does wear rather quickly. Yes, the carbide is smaller than on the Forrest. Yes,you can probably only get one resharpening from it. But for the hobbyist, its hard to justify the Forrest.