I've got a DNA in my Dewalt & I'm not that impressed with it, I think the standard Dewalt blade I got with the cutter gives a better finish.
For wet saws Rubi, Dewalt etc then a continuous rim blade (of any brand) is going to provide a better finish, particularly on very dense porcelain.
Your standard Dewalt blade gave a better finish than the DNA not because it's a better blade - simply because the continuous rim design suits cutting porcelain better than a semi continuous rim.
The benefit of a turbo blade is more obvious when cutting dry, the design of the perimeter of the blade helps remove the waste material for the cut channel and also cool the cutting head. In a wet saw the water does this job and negates the requirement for a shaped or stepped segment.
Bricks, roof tiles, clay tile etc benefit from segmented blades to remove the waste material rapidly and you often don't need the same degree of finish on a brick as a polished porcelain tile.
So various blade designs suit various applications. So unless you have a specific blade for specific products i.e. one for each of marble, porcelain, ceramic, granite, quartz (which are available) the best all round product design is continuous rim. It will cut everything.
In an ideal world you'd use the following:-
Marble - electroplated or vacuum brazed blade or metal bonded specific for marble.
Granite - segmented (laser welded preferable)
Quartz - turbo
Porcelain - Continuous rim for dense material
Ceramic - Continuous rim for medium to hard material
Concrete - segmented blade usually laser welded
As most tilers don't really want half a dozen blades, the best all round is continuous rim in a wet machine. It might not be as fast as some of the other options, but the quality of cut won't be an issue.
