Most off the shelf router accessories from the actual router manufacturer are wanting to a more or less extent.
Even Festool can be annoying lacking sometimes.
You best bet is to figure out which router motor has the more preferable combination of power and ergonomics, and then make check whether you can get aftermarket collets in smaller sizes like 1/8” and larger sizes like 8mm, since these might be useful or needed in some instances, if not most.
This is a company that makes aftermarket collets inna wide variety of sizes.
Adapters will reduce all router collets.
elairecorp.com
The other thing is to check that Microfence makes a base that will fit the motor if you might need high precision in the future.
Plunge Base category.
microfence.com
As far as the trimmers you mentioned go.
Dewalt gas various models, some with plastic motor housings (I would avoid these), and others with machined metal housing that screw into the base like an old Porter Cable 690 adjustment (this system annoys me, but dome people liked it), and then the models based on old Elu designs (I think) were the base attaches to a collar on the end of the motor. ( sometimes there are inaccuracies in this system due to poor machining).
The Bosch Colt has a good reputation, but still has a lot of plastic.
The metal based Makita trimmer routers have a fully machined round motor housing, (the RT0701C). Aftermarket Collets are available in a wide range of sizes from Elaire.
Microfence makes a plunge base that would fit.
There’s cordless motor option as well, if for some reason you need both a cordless or corded option in the future.
I don’t know how the power on the Makita compares to the Bosch and Dewalt routers,
Bosch and Dewalt both tend to make very powerful small motors.