@traudio Well, you will give something up if you let go of the magnepans (something your replacement speakers will never do as well).
But, you could have it all if you became a non-purist such as I (armed to the teeth with critical execution tools).
Look for a used prepro known as the Yamaha CX-A5200 (worth its weight in gold) and study how to use it well. It shall bring you salvation.
Godspeed.