The Pentium III 700 is such an efficient CPU even when overclocked, you cannot get any better using more expensive HSF than the Golden Orb. In fact, the Gorb has the best mounting mechanism for P3's which is the most mechanically stable and maintain the proper pressure.
I am using an Alpha now only because I have it.
I compared the Alpha with Gorb and Chrome orb on the same P3-980 on CUSL2. There is no measurable difference in CPU temperature at idle or surfing or word processing etc. When running contiueous loop Prime95, the Aplha is about 2 degrees C lower than the Chrome Orb and 5 lower than the Gorb. For example, in a 28C case temperature, the CPU will be 37C, 39C and 42C running Prime95. It gives you a safety margin of 30 degrees or so in all cases.
Use an Alpha if you can afford it. The Sanyo Denki fan (3800 rpm, 28 db) is adequate and very quiet. There is absolutely no reason to put up with the noise of a FOP38 on a P3.