Just wondering how many shaves I should expect from a blade on average. I know YMMV depending on how thick/coarse your beard is, how often you shave, etc. But how do you know a blade is shot? Does it simply stop cutting the hair, does it get uncomfortable to shave with, start tugging and pulling, or what? I used a Personna Chrome Platinum blade for the 3rd time last night, and it took me 4 1/2 passes to get decently close, and I still wasn't real happy with the results. But the blade never dragged or pulled, it was just like it wasn't cutting anything. Is this typical? Just looking for some help from you old hands around here on what I should be expecting. I have a very light beard, and I've read that a lot of guys change their blade on the same day every week. If a Personna only lasts me 2+ shaves, what blades are the guys that change once a week using? Also, for the guys that have multiple razors in rotation, do you use the same brand of blade in each one, and if so, do you transfer the same blade from one razor to another each day, or load up all the razors, and change the blades when they are used up? Thanks.