Hmm
M-Audio sounds too nice, as in better than flat.... so I avoid them. I've heard issues, problems, with almost every brand, at some point......
Also, speakers are not just Gear, it's a speacialized area.... usually good speakers 50 years ago, still are good....
Near Field Monitors, which reveal what was actually recorded, while forming a triangle, with your ears @ the apex, even with tweeters - are super important.
( You don't really need to treat a room acoustically, you only want to hear them once, not bouncing back through the room, hence near field, close up, listening... )
Some Mastering Headphones are out.... AKG 240 DF Digital Reference <Mastering Headphones>, with 20Hz - 22KHz +/- 1db !!! So, that is cool also....
The original & still in 66% of studios are Yamaha NS 10's - for 25 years.... they were flat.... and not pretty.... but if you made a mix on those, it translated to anything, and so few can say that....
Now, the wood for speakers, pulp, needs to be exactly the same trees, same place, same age, so every pair is identical.... but the trees are all gone! So, no more New NS10's - maybe still available?
The Yamaha MSP 5's, 5" is a good size, very close to most cars, stereos, TV's, Computer speakers.... and new, as a replacement for the world standard, the have frequency response from 40Hz - 40 KHz +/- 3db( No speaker get's that high up! ) & if you like, There is a subwoofer with 10" or 12" to grab all freq below 110Hz - but highest fidelity of ANY price....
27 watt tweeter amp, 40watt Woofer amp... XLR Sub inputs.... I found them when Guitar Center had every synth set up with these... whole store.... so you could compare.... very nice.... highest fidelity... and legend in speakers for mastering, mixing, since.... ever....
Oh try Mastering Headphones also.... AKG 240DF - and some others - check Mastering category, and frequency responses...
Yes, and LISTEN.....
It's not so much what you buy/ use.... it's how used to them you are.... over time... never "Upgrade", add another pair to compare, but keep old faithfuls.... You need to know how the recording translates on anything people may use.... so same speaker.... stick with it.... Yamaha MSP5's are easy to get used to..... and inexpensive.....
Good Luck,
LT