SL2 are brilliant light poles for high work all day long. Extreme's are good for collapsible lightness. Gardiners green Ultimate is suppose to be the best though slightly heavier than an extreme. Not tried one yet.
I normally use an Extreme but have just bought a supermax 3k because some locations I work are quite gusty at times and prefer using a more rigid, heavier pole in these locations so it doesn't feel like I'm flying a kite as the light ones get blown around with side gusts.