1. Viking's Sword 2. Astra SP 3. Wilkinson Sword. Viking's is on top due to performance and price. It's the best in every aspect there. The Astra is in front of the Wilkinson due to performance vs. price. The Wilkinson is a tad smoother, but at twice the price compared to Astra, it "looses". Should I go with one for life, I'd pick the Viking's Sword without blinking.
I like the derby extras. I have a lot of area to cover, and they only last about 4 shaves, but i get a BBS shave, and no nicks with my ball tech.
Polsilver SI Astra SP Feather I'm still new to DE shaving and have many more blades to test. I'm sure this will change.
Right now I'm working through a (fairly) large supply of Crystal Super +. So you could say they are my favorite since I get a very close and comfortable shave. I finally got around to ordering some Feathers which should show up any day now. I consider price when I pick a "favorite" anything, so the Feathers may give me a better shave, but they may not become my favorite because they are around double the price of the Crystals.
Current favorites are PolSilver SI and Gillette Nacet(I forget which version), but I have tried 7 o'clock black or Astra SP yet.
Much depends upon the razor being used. But if I had to make a Top 5 list.... 1. Feather Stainless 2. Merkur Super 3. Personna Med 4. Astra SP 5. Astra SS
Q-Ball - that's chrome platinum personnas, very good quality for price Gillette Rubie - very good blades but expensive Rapira - I like them