I've tried all three—vardenafil, sildenafil, and tadalafil. Each has its pros and cons, and whether one works better than the others can be quite individual.
From my experience, vardenafil worked slightly faster for me and seemed to have fewer side effects compared to sildenafil. However, sildenafil was just as effective in terms of results, though it sometimes caused a bit of a headache. Tadalafil was great for its longer duration, lasting up to 36 hours, which provided more spontaneity.
Vardenafil did feel a bit more effective, I'm not sure it's worth twice the price unless you're experiencing side effects with the others or need its particular advantages. Try different options if and see what works best for you