Sounds like you have a background in studio monitors. What do you think about nearfield vs. farfield listening for rock and techno. Would it sound more "right" because it is mastered nearfield? Most people here listen to jazz, quartet, classical, and orchestra so it makes sense they want farfield speakers to recreate the soundfield of those types of music and instruments. Would there be a speaker better at electric guitar, synthesizer, drums than one for acoustic instruments?
I am a hobbyist producer yes with friends who are actual mixing and mastering engineers, so I know a decent bit. A nearfield speaker can be good for farfield provided the dispersion is controlled, is wide enough and can provide the necessary SPL at the longer distances. Unless you have the specific speaker used n the studio at the time of mixing and mastering said guitar record, it is better to get a speaker that allows the quality of the record to shine and the Micromain does that but is narrow with dispersion vertically so I'd rather you get the Genelec with the class leading dispersion control that can also do both near and farfield