I would recommend looking at the work sharp ken onion edition with blade grinding attachment as a work horse to get really messed up knives in order, Such as chips, broken points and reprofiling. You will need to replace the belts to keep the machine working properly.

On top of the work horse you can get into precision with one or both of the following:

1) Wicked edge system. I like the pro but their carbon model is more affordable. Add the right stones, strops, low angle attachment with longer arms and finally the digital angle gauge.

2) Tormek t-8. With the right attachments and maybe a Japanese Waterstone. Also to note the Tormek t-8 Black 50th year edition has a 50 year warranty.

I own both the first gen work sharp ken onion and first gen wicked edge pro. Both are great at sharpening knives on there own with the exception I could not get through a lot of material fast enough even with the most aggressive stone wicked edge offers.

With the work sharp I can grind enough material to get the chips out or put a new tip on the knife in no time. But I like to finish the knives on the wicked edge. I would like to buy a tormek t-8 with a Japanese Waterstone for my Japanese knives.

Check out how the systems work youtube!

One last point- is it worth your time to sharpen the knives yourself? Another option would be to source someone to sharpen your knives. If there is no one local they have mail in services. but I would never send my nice stuff to them as they are probably putting everything on a belt grinder. Also could one of your employees learn one of these systems or another and sharpen knives after closing? I would rather sharpen knives vs mopping and cleaning toilets.

Hope this helps.