Are you going to be sharpening dull blades or maintaining sharp blades?
From what I have heard the Sharpmaker will maintain a knife, that already has an angle to match the Sharpmaker, quite well. If you need to remove a lot of metal, sharpen a dull knife, or rebevel a knife to a certain angle then the Sharpmaker might not be the right tool.
A rod guided system will sharpen a dull knife, is easy to use, will remove metal, will rebevel, will maintain an already sharp knife. It might be a bit more work to set up than a Sharpmaker and not as portable or convenient.
I am partial to the GATCO rod guided system. Do a search on blade forums for it if you wish. Other rod guided systems are the Lansky and the Edge Pro. The Edge Pro, from what I have read is the top of the line for rod guided systems. The price is a bit higher as well. If I was sharpening semi-professionally I would buy an Edge Pro.
There are various other guided systems that will work as well.
Then there are bench stones. There are various stones and ways you can use them. I have a set that is three stones (Arkansas soft, medium, hard) mounted in a triangular fashion so you can rotate them to expose the one you desire. I have never gotten the hang of them but I am about to give them another try.
If you hone before you get dull you will extend the life of your edge. I have a GATCO. I added the extra fine stone and the ultimate finishing stone (a ceramic). I also strop on leather with red and white polishing compounds. I find that if I strop every so often I do not need to go to the stones much. If I need to stone I do not have to go through the whole regimen from coarse through finishing each time. It is all about maving two bevels that meet in a fine edge. You do not have to remove a lot of metal if you are already close.