Its a tough call. The KME is a solid system , and Ron is a great guy.
Personally I prefer the EP , the larger stone surface area makes larger jobs easier , it can do more than the KME I feel as well. Both have the same aftermarket if you know who to talk to , and both have great customer support.
I would ask myself a couple questions
-How steady can you hold a blade on the blade table of an EP?
If you already have some experience freehanding than the EP may feel more natural to you , if your new and are looking for the easiest system the KME is probably the way to go
-What volume of knives am I doing , and what kinds of knives are they
While the KME is a great all around tool , it falls short on some larger jobs , large knives and axes/hatchets etc are much harder on it comapared to the EP. I also feel like the EP is faster , the larger stone surface area and solid mounting system makes it so you can really bear down on it to hog off some metal (when necessary). Not to call the KME slow , but I do feel the EP has an edge here (pardon the pun

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Ultimately you will be happy either way , but you need to look at your needs and make the best decision for you.