Elu reliability is legendary.
I still use Elu's first ever router, the MOF 11-01 which dates from 1951!
There has never been a better router for cutting housing joints. In fact looking at the design of the MOF 11 I'm pretty sure Elu's original vision was that a router would be a dedicated machine specifically for housing joints. I suspect that early users of the MOF 11 discovered it was far more versatile, which in turn led to the MOF 177 and MOF 96.
A key characteristic of the MOF 11 was that the plunge mechanism featured this arrangement with two stops,
This allows you to cut any width housing joint by swinging the router over to the left hand stop and pushing the machine away from you to cut the first pass at the full width of the cutter. You then swing the machine to the right hand stop, lock it off, and pull the machine back to you, which makes the necessary adjustment to the width of the housing joint.
Another bit of evidence that suggests this was more of a dedicated housing machine than the general purpose router we know today is that there's no collets. The router bits are threaded and screw in. I suspect that this indicates the intention was that you wouldn't have many bits, and it wasn't expected that the user would change bits all that often. Astonishingly Elu threaded router bits are still available for sale.