Hawk HPS without question, see Tire Rack link below;
http://www.tirerack.com/brakes/brakes.jsp?...&perfCode=SI would challenge anyone to find a better all around brake pad than the Hawk HPS (High Performance Street). Hawk pads are also engineered and manufactured in the USA under tight quality control unlike many brake pads today.
I've run through more than my fair share of "performance" brand brake pads and most are either no improvement over OEM, or bite like crazy and leave your wheels; and quarter panels covered in brake dust.
The Hawk HPS is VERY low noise, only a slight increase in fine brake dust over OEM and braking performance is noticably increased. Additionally the pads still surprise me how easy they are on rotor wear, and how long they last given extremely aggressive braking; i.e. frequent 100-0mph stops. Try them out, you'll be sold for life.
Otherwise... if want the most aggressive street compound that doesn't have to be heated up to reach full potential the Hawk HP+ pads bite more but also create a noticably higher amount of brake dust and goes from next to no brake noise to squealing and such due to the more aggressive compound.
Currently my 914 has Hawk HP+ on the front and Hawk HPS in the rear (but I'm also using 3-Series calipers on the front)
But don't take my word for it; the reviews on Tire Rack speak for themself!