I've had a KME for years and it is a great system. When I was searching out systems, Wicked Edge didn't have the "lower" cost models they do now so that certainly played into my decision. That said, even with their introduction, I'd still opt for a KME. That's in no way a disparagement on the WE system as it is well proven. The WE will give you the convenience of not flipping the blade, but you need to buy two of everything.
The KME is so slick and easy to use once you get used to it that flipping the blade becomes, at least for me, a non-issue. I rarely go above the 300 or 600 stones so not a lot of swapping and once you're comfortable with the process, you can skip the base and sharpen your living room chair if you really want to.
All that said,why are you committed to a system? What about freehanding turns you off? I absolutely would not use the Work Sharp "guided" bench stone setup as a gauge of freehand sharpening! If you're talking about the one with the angled wedges at both ends, forget that thing. The only thing those wedges do is give you some idea of what the rough angle looks like. That is it. You still have to control the angle through the strokes and you're stuck trying to match that specific angle and in my opinion it all can just lead to frustration because you're not getting the edges you want and this is "supposed" to be a simplified system.
I don't know if that resonates with you, but if so, you can freehand sharpen. A red permanent marker for marking the edge bevel and a course Norton Crystolon stone will get you started. Stick to at least 8" long as they give a lot more surface area. You can sharpen even the high alloy steels on a course Silicon Carbide stone but if you really want a diamond, I'd suggest an Ultra Sharp 300 or 400/1200 grit combo stone.
You can produce very sharp knives for not a lot of money if you're open to it and want to learn.
There is nothing at all wrong with using a system, especially if you have physical limitations and such. Just tossing out that basic freehanding is not the mystery it is often made out to be.