Jeltz said:
There is conflicting advise because there is more than one way to skin a cat! If you are only maintaining and not looking at restoring razors you only really need look for something which is used as a finishing hone. To list what is easily available, rather than vintage stuff that may crop up on ebay:-
A Chinese 12K hone will do this, it is cheap but very slow. They are a natural stone so the grit rating is an estimation of the equivilent synthetic stone and most likely bullshit.
A Naniwa 12K Superstone, these are about 3 times the price and have an excellent reputation.
A Coticule a natural stone which which can be used with slurry or water and covers a broad range of synthetic stone grit ratings according to the thickness thinness of slurry, IMO a coticule can replace from 4000 grit to 10,000 grit although some stones are better than others.
The choice is yours.
This is the best post so far.
From the OP, I gather you want a finishing stone only.
If that is the case, you shouldn't even be looking at anything under 8,000 grit.
A coticule is rated among the forums as between 8-12k. Different people, different opinions, I'm sure someone rates theirs at 16k or more. Either case, you can't really compare a natural stone to a synthetic anyway, they are natural and unique, not uniform and identical.
Personally, I'd stay away from the Chinese 12k, it cuts so slow you'll get bored or frustrated. I really love the Naniwa 12k. I don't think you are going to find a better stone for the money. However, its pretty darn close to $100.
Don't buy a coticule. The results are not worth the premium. People are paying so much because they are a natural stone and come with the mystique and uniqueness of a natural stone. They don't produce a finer edge or anything. They produce a "different" edge, but you are unlikely to notice.
For an 8"x3" coticule, you are going to be looking at several hundred dollars. No joke.
Okay, now for the even better option.
Just buy some diamond spray or chromium oxide. Infinitely cheaper and you probably won't be able to tell the difference. Plus, you already know how to strop. Some people report that they are able to sharpen their razors for years upon years (possibly forever) using pastes/sprays. Not sure if its true, I don't have the patience to do such an endurance test.