Over the decades I think I've built L3 airframes out of all the conventional materials except PML Quantum Tube. The choice comes down to the airframe design and flight profile. Cardboard tubed stubby, large diameter airframes for M powered lob flights work just fine, while the same material used in high L/D ratio airframes often results in inflight flexing and rapid disassembly.
Another aspect is how often you are planning on flying the airframe. Once and retirement or flights with lower total impulse motors have different needs than an airframe that you're expecting to fly over and over again on M motors. My ARLISS airframe has ~20 flights on it and is ready for more due to its fiberglass airframe and replaceable fins. Other ARLISS fliers might have over 50 M flights on their fiberglass airframes.
Another aspect is how often you are planning on flying the airframe. Once and retirement or flights with lower total impulse motors have different needs than an airframe that you're expecting to fly over and over again on M motors. My ARLISS airframe has ~20 flights on it and is ready for more due to its fiberglass airframe and replaceable fins. Other ARLISS fliers might have over 50 M flights on their fiberglass airframes.