EMGs are fine unless you really lay into strings or play music with fine nuance, when the compression pulls out your dynamics. To be fair, a lot of this is due to the reputations of the 85 and 81, whereas I very much disagree on this tack when it comes to the qualities of the 60 and the S/SA/SV models.
EMGs are great if you're recording digitally since they give the computer a really "clean" signal and without any noise. Their lesser known models are the best, the 60 for clean, and the 58 for dirty blues/alt rock/metal stuff(it's really p90ish sounding, but with tons more gain). They're also great if you want your sound to be consistent and predictable.
EMGs suck if you play live and with a lot of dynamics, or if you crave a really warm sound(ie without so many overtones) because the preamp levels the playing field a bit and brings out way more harmonics than your average passive pups.
Personally, I prefer active systems for playing clean(because each note is so defined) or with lots of effects into an amp that doesn't like being overdriven(solid state), but passive pups kick ass into a tube amp with the volume cranked.
But there's yet another alternative: passive pups into a preamp. Oh boy, the cleans are soo clean, and the dirty makes the pickups you thought were already wild into fire-breathing demons. The trade-off is that you get extra noise, since the preamp comes after miles of wire, but it's still managable compared to the signal level, especially if your guitar is well shielded.