I always thought using the old stones & oil was best, and thought those ones with carbide & ceramic V wedges were kinda gimmicky. I used to Google anything for 'best of'', 'reviews' and what not of various things, but they were mostly one sites or persons review of said item. I've also looked at CNET & epinions for reviews, but I found them old, very few, inconsistent.
Lately I've been looking at Amazon.com for whatever, and looking at the reviews there. Or I browse categories for the item I want to find, and limit the rating to 4 or more stars & sorted by best selling.
Which let me to many of those carbide & ceramic V wedges..which I have tried afew, and didnt like. So sifting thru the Amazon results I found this good looking candidate:
Amazon.com: Lansky Deluxe 5-Hone Sharpening System: Kitchen & Dining
and there is a good Youtube video of someone using one: