As fishgasm brought up, Power Pro is probably the most widely used and versatile braid out there. I've tried a few different brands and 30# Power Pro was (and still is) a good all-around replacement for many of my old mono applications. For frogs, punching, anything around heavy cover I am loving the Sunline FX2 in 50 or 60 lb. That stuff is relentless through cover, lasts forever and casts well for a heavy braid.
All that aside, I still use mono in clearer waters and still ponds (where line visibility is more relevant), or when I need the added sensitivity or a bit of stretch factor. That and it is far less expensive than braid or flouro...