Nothing wrong with black diamond discs. There are a few people that swear by predator pads. I guess it depends on the duty they will see. I personally don't rate them as they don't tollerate heat well and seem to disintegrate fairly easily. Like many things, a lot of things comes down to personal preference. If they're going to see road use only and perhaps a bit of spirited driving, they'll be fine. For anything more demanding, they tend to fall a bit short.
Mintex M1144 are my personal pad of choice. A very good all round pad which are easily available, if a bit less budget oriented. I've run them on standard discs, bigger vented discs (Pulsar GTIR) and even have them on my AP 4-pot setup. They're however for more fast road / light track usage though, so it's horses for courses.