My last question is... how important is the blade?
I got a sample pack with Merkur, Crown, and Trig. But which would be good for beginners? For one I don't have a thick beard so there's no need for Feather blades (and as a beginner I rather not look like the Joker).
Also how often should you change the blade?
The blade is very important. Derby felt like I was ripping the hair out of my face. I thought it may have just been a bad blade but all I tried were the same. Perhaps it was a bad batch. I had bought a 100 pack because my first set was the best.
Now I use Shark Super Chrome. Each blade has been good and consistent. Better than any multi blade.
Feather is reputed the best but is nearly double the price. Also they are unbelievably sharp and not recommended till after your first year. I might try them next but I still have a year and a half supply of the shark.