The all-chain is very nice.
The downsides are: massive amount of extra weight, at the worst possible location; chain retrieval brings along every single bit of seafloor crud possible; the additional step of placing / retrieving a snubber hook for extended stays and (in my case) the chain beat up / broke loose the anchor locker gel coat in rough seas.
When I retired by 200' chain rode, two full five gallon buckets and all my strength to move one at a time, I discovered that the boat handled much better and that my top speed increased by 2 mph.
HUMPH, your 420DA is bigger than my 380DA, did you notice any performance decrease when the all-chain rode was installed?
Prior to launching the boat for my second season I installed a raw water bow wash down: through hull; seacock; strainer; a pump, wired to have power w/ the windlass and a hidden deckplate coiled garden hose. I would then stand on the bow, remove the new garden hose deckplate and squirt off the entire length of the rode during retrieval. This was THE ONLY way to keep the anchor locker acceptable. A garden hose squirt at the dock had zero effect.
On the plus side, there were more that one instance where a really smart boater determined the best course of action would have been to cut my rode, only to be sent packing by the all chain rode.
All chain holds really well, but there is no way the rope on my rode will ever break.