I'm a big fan of the SH-5 Duncan Custom for metal. Have one and plan to get another for a different guitar. I spent two months or more researching and listening to various samples. The number of choices out there for pickup models is almost overwhelming at first. In the end I decided on the Custom. I haven't regretted the decision once and still love it a couple years later. Has the best artificial harmonics of any pickups I've used. I find they're better than my Jackson SLSMG with EMGs(was an 81 in the bridge when I got it but I've since swapped for the 85 in the bridge). Also, if you buy it from most music stores, you have typically a month in which to return it so you could even buy a few, try them in your gear and return the others.