Well i think the Alesis M'1 MK2 are one of the best set of Studio monitors around under the $500-600 price range.
they are excellent on the High end. as well as well as the Mids and not to mention the perfect bass extension on the low frequency (meaning that there is no need for a sub woofer).
i have tested the Mk2's directly with other hi end monitors such as the Mackie 824's, Genelec, Dynaaudio, etc. the testing was carried out using various Cd's with Acoustic Guitar recordings, kick drums, snares, male and female vocals, using a mackie 1402 vlz mixer, a Crest Audio amplifier (one of the best money can buy), low impedience Proel cables, the same room, with small listening breaks.
the final conclusion that i can make has to be the Alesis M1 MK2's.
They were performing 2nd to none. very detail on the Guitar sounds, warm, smooth and non edgy vocals, tight kick drums, dead straight snares (very clean and outstanding), and the bass on the bottom end letting you know whats happening with the bottom octaves.
Yep, these MK's have to really be critically testeted before one can start to quible, and even then you have to know what your looking out for.
i have done my tests, using the top end audio fidelity, and comparing the mk2's directly to monitors well over $1000.
i have studied acoustics for one year and feel that my judgement on the mk2's are realistic.
for the low price that they are, these well presented studio monitors should be present in more studios around the world, but it seems to be the high price and markting gimicks that push professional users towards other brands such as Mackie.
however, if you are a true musician and like to study where your money goes, you really should put the Alesis M1 MK2's to the test up against other higher priced monitors, if you really find a major difference (the sounds become more brighter on the expensive ones...lol, you will only be fooling your self.
Bottom Line -
excellent sounding monitors very flat response affordable well designed no fatiguing after long hours just simply the best monitors