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+1 on a couple of counts.
Rarely use a DE but when I do I go for a Personna (Med Prep or Blue - US Production)

The Feather is also great but I don't think I use a DE enough to get the most out...

The whole blade/razor/soap/face matrix of variables make this a "your mileage may vary" (YMMV) thing.
It's recomended that you try a sample pack for instance. A blade/razor combo that might be...

Assume that you are asking about DE blades?

If so, results vary between blades and users - from one to more than 7 shaves per blade.

Smooth shaving...