Good 8k, one technique for extra smooth
Manch, this is old news for you, but getting a good 8k is wonderful. I've had 2 things take a good 8k edge to a greater level of smoothness - one costs nothing. I took a good norton 8k edge and gave it 5 super light strokes on a Swaty barber hone. The Swaty did nothing to increase sharpness, but an already smooth edge got smoother. Another practice I started using on all grit stones was the use of backstrokes (spine-leading). I expect the results will vary alot from user to user, but for me, it consistently gives me greater smoothness - sometimes too much. I like tactile and audible feedback from an edge (Heavy Sheffields need not apply), and too many backstrokes can take away this feedback. It sounds like you'd be very well served for very little money (comparatively) by the Nani 12k. You may find yourself using fewer strokes on CrOx or not needing them at all. FWIW, the backstroke works nicely on the N12k also. Best of luck w/ your choice, and I hope it puts many a smile on your face.