my tuppence-worth...
years and years ago, for a particular project, I bought a Ferm, corded SDS, for £49.99. It drilled hundreds of holes from 5 to 25mm, I used it for stripping bathrooms of tiles with a wide chisel, I used it to chisel out brickwork for a boiler exhaust and for installing vents for bathroom and kitchen extractors..driving Multi-Montis into breeze block, and it's still going strong. My view was that if it lasted for that first job, it was good value...it has proved to be so much more, yet Ferm is hardly known as a go to brand!
More recently, I have had experience of a MacAllister SDS corded from the big orange store, and it was absolutely brilliant while it lasted, but we are now on our third in as many months...however, they are very tough and we abused them dreadfully making them work extremely hard digging out conctrete fences and running for several hours at a time. Each time we had a failure they were replaced without question, and I am quite sure that if I bought one for personal use it would see me out comfortably even if I used it every other day for say an hour or so. The clutch mechanism on it was a real boon, and I wouldn't be without it. It all depends on what you really need, the use frequency, and the material being drilled.
My 35 year old B&D hammer drill will put a hole through any modern brick houses for an outside tap, say, with no problems at all.
Horses for courses...(brick courses, of course)