I chose the Dolmar after doing my research. Great Saw!
I don't have blind brand loyalty, so when I was looking for the best saw in that size and price range, I researched several different brands & models, including the Husky 435 & Dolmar PS420. I looked them up on the web and asked dealers about problems with certain models. I also asked questions of people who had puchased them.
I ended up buying the Dolmar PS420 simply because it was the best choice.
It's a true "PRO" saw with all the features, i.e.-vertically split magnesium crankcase, coil spring AV, auto/manual oiler, easy start feature, etc.
It was the only pro saw I considered in that price range. All the other saws were "Homeowner" types.
IMO, the next choice would have been the Echo CS370/400, as they seem to be a very good saws.
I haven't regretted my purchase. The Dolmar is a very strong cutter for its size, and feels close to my Husky 51, but is much lighter.
And it's made in Germany and not China, if that matters to you.
I paid $299 for mine, so you would be getting an excellent deal if you went for the Dolmar.
I don't care for any of the OE chains, and the dealer readily swapped it for a pro chain.
I'm not knocking the Husky 435, as it seems to be a good saw. And you said you were only going to use it occasionally, so it would probably do well for your needs.