I'm about to purchase an Edge Pro Apex 3. I'm considering buying an additional stone to complement standard the set of stones that come with the Edge Pro. The stone I was considering purchasing is the Chosera #5000. I have found data that says the EP #1000 stone is 7 microns and the Chosera #5000 is a 2.8 micron grit stone. I want to use the Chosera stone for higher end polishing without going to the trouble of trying to use polishing tapes on several Shun knifes. If the micron size is correct is that to big a jump? What are your thoughts on purchasing the Chosera stone?