There is nice detail on the turrets and the blast bags are especially well done.   I think they capture the "look" of canvas quite well.  The barrels have open muzzles.

The Shapeways turrets come printed all on one runner.   As the name implies, these are slightly translucent.   The finished product has an oily, waxy coating that needs to be cleaned before they can be printed.   Sometimes, they parts also need to be put in ultra-violet (UV) light to further "cure".  To me, this is the biggest drawback to the matte translucent plastic from Shapeways.   I've had parts that - even after being left in the sun to cure and having been thoroughly cleaned - are resistant to enamel paint, which is my preferred type of paint   The other thing to note with Shapeways printed parts is that the parts show the lines from the various printed layers.   You'll need to smooth this out before painting, either by sanding or with an air eraser. 

As per the Model Monkey website,"each gray resin model will come to you with several supports attached to it, normally at the bottom.  These supports look like sprues found in injection-molded plastic model kits."   Depending on the size of your printed parts, these supports can be quite extensive in number, and quite time consuming to remove   They also leave a small nub where attached to the part, so additional clean up is required.   It took me about 15 minutes to remove one Bismarck class turret from it's 3D printed base.  If you don't wear glasses, wear some sort of eye protection when removing the supports, as the supports break easily as you are cutting them, and tend to fly everywhere (at least they did for me). 

So which is better - the matte translucent plastic or grey resin?  The Shapeways printed parts have slightly finer details, but then you have to make sure the plastic is fully cured and cleaned before painting.  Additionally, the parts may be sensitive to prolonged oxygen exposure, and tend to "frost" if not cleaned and painted right away.

The grey resin parts look like they clean up more like "normal" plastic or resin, but then there are those annoying supports to remove and nubs to clean up.   On the other hand, they are almost half the price of the Shapeways offerings. 

At the end of the day, I'd say  it's up to the modeler to decide material is easier to work with, but I'd recommend either set as an upgrade over the parts found in either the old Tamiya or newer Revell Bismarck and Tirpitz offerings.   I plan to use the Shapeways parts on my Revell Tirpitz, and the grey resin on an old Tamiya Bismarck. 

These are Model Monkey's 1/350 Bismarck and Tirpitz 38 cm Turrets with Barrels and Blast Bags.  The Shapeways printed turrets are $42.33, while the flak tubs are $7.26.   The grey resin parts direct from Model Monkey are $24.00, the flak tubs are $5.00.

While I paid for the Shapeways parts with my overworked credit card, I'd like to thank Model Monkey for the samples of the grey resin turrets and flak tub.