Running US HO in the UK means it's easier to use controllers available over here. I've been using hand held feedback controllers for some years, the first one by Gaugemaster, the later one by Kent Panel Controls.
I use blocks and I'm not yet tempted by DCC.
I notice that the locomotives seem noisy using feedback control. I have a short automatic reversing track that I use for running in locomotives. This does not use feedback and the motors run very quietly there.
I recently tested Mantua 0-6-0, a Bowser Kit, Bachmann 2-10-0 and Gas Electric Doodlebug and the results were the same. The Bachmann were especially loud using feedback but ran like Swiss watches without.
So, is there no longer need for feedback control. And if not, can you please suggest a replacement hand held controller.
All the best,