You might be interested in a Coticule, too.
Look here:
Ardennes Coticule - Producer of the Coticule whetstone!
The cheapest option is about 30 Bucks plus shipping. The bigger, the more expensive. My stones are wide, but I have no doubt, that a 3cm wide Hone would do the job perfectly well. Length is up to you; 12+ would be good. Ask for a fast hone (That means, from a fast layer.), preferably with a Blue side and a matching slurry stone. Then, look at coticule.be and learn how to use it.
I´m pretty sure that people will tell you not to do so and buy a Norton or whatever, but in the end, it is up to you. I don´t have Nortons; all I can tell you is that currently, the coticules I´ve got are the only Hones I use. No pasted strops needed, although you are welcome to use them after the coticules.
If you want to restore old razors, look for a hone around 600 grit, too. In my opinion, that´s all you´ll ever need.
I hope, this helps.
Regards,
Tok