A rather interesting review of cordless track saws

There's only one blade that is 162mm - that's the one you're meant to use if making use of the scoring/scribing function. Rest of the Mafell blades are 160mm.
 
My track saw is a DeWalt, the blades are 6.5 inches, 165mm, with a 20mm arbor - same as Makita.  I saw the same review and others by the same group.  I consider them OK, not great.  They use a lot of subjective criteria.  But their point about limited clearance for my hand on the DeWalt is something I would check out before buying one.  But with three DeWalt tracks, there is nothing about the other saws that could cause me to start over.  I like the review, it is a good way to get some information on a variety of saws it would be hard to otherwise get the same information about.  But I don't think the DeWalt cordless is a bad saw just because they rated it the worst. 
 
I've been using nominally 165mm blades in my MT55 & 170s in my KSS 55 no problems at all.  Unsure it that's the actual (measureable) diameters.  For me life's too short to be overly concerned about such things.

As long as the blade has a nice thin kerf (both saws are CAS 18V cordless) & work without fouling then I'm happy.
 
Interesting review.  The results are predictable.  Mafell is the best, Festool is very good and Makita is the best value. 

For me the choice would be easy because....

a.  I don't have any batteries that will work in any track saw.
b.  I already have a corded saw that yields quality cuts.
c.  I have lots of Festool track

So Makita is the runaway winner.

 
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