I'm considering venturing into the world of straight razor shaving, but before I invest in the expensive accruements of hones, strops, and the razors themselves, I'd like to practice on a more affordable disposable razor to see if I can develop the knack for it and if it will produce a good shave. That being said, what are some disposable straight razors that are inexpensive enough to begin with but not cheap enough to produce a deceptively poor shave?

I've been looking at the Magic Razor:
Charles Spilo - Spilo Magic Razor

and Persona:
Personna - Personna Pirouette Razor

Thanks all!