My favorite "inexpensive" stones are the Norton India oilstones. A fine India will produce a shaving edge, even though a bit coarse.
A good India stone will last forever, as long as you don't use 3 in 1 oil on it.
Lately, I have been going to the use of stones that use water, or can be used with water. I use a Norton Lily wite washita, followed by Norton soft or hard Arkansas stones, depending on how fine an edge I want. If I want the sharpest edge I can get, then I finish on waterstones at the 8000 grit level.
I don't like waterstones for curved edges - as on gouges and carving tools, or for knives. They are just too soft. I have a couple of Shapton stones, and they are harder, I just don't like to have to flatten them. That is why I like the Norton stones.
Lately, I have tried some Spyderco ceramic stones - medium and fine. They won't produce an edge that compares with Norton Arkansas stones, and I just don't believe the comparisons with grit value. They are meaningless.
The least expensive, quality stone that I would use is a Norton fine India. It cuts pretty fast and leaves a good edge. If you need to plane hard maple, then you need to use a finer stone after the India, and perhaps a strop as well. If you are sharpening a kitchen or hunting knife, you don't need any more than a Norton soft Arkansas. Most people would be happy with the edge from a fine India stone for many purposes.