With Mr Smith on this one, had the Alesis M1 Active Mk2s for about 4 years now and they have never let me down.
I own a set of M1 Actives, just replaced them with Yamaha HS7's, if you can stretch your budget to £300 or so, the HS7's are a lot better of a buy, room correction, eq on the back, I find them a lot more responsive than my alesis and a hell of a lot more balanced, saying that tho the M1's are amazing and mine are battered.
lol, that's funny....my mate had the alesis and replaced them with yamaha HS8's....the HS8's are SOOOOOOO much better but quite a bit more expensive. they're also huge.