I love my Coti & that I only paid $3.00 for it makes it that much better. I don't have a 12K hone yet but I do have a 10K stone. I do like the Coti edge better than my 10K.
I would go for a 12 K hone in the short term & look for a deal on a Coti. Finish hone under running water with the Coti will make a big difference in the way any Coti works. Hit the antique shops, flea markets & even garage sales & look for all things shaving. That is how I have found ALL of my gear.

Slawman