I agree the price is good...but the ea90 slx's are primarly a short sprint and climbing wheel. Not something you'd want on all flat terrain. You'd benefit more from a more aerodynamic wheel that's a little heavier than a light less aerodynamic wheel.
The difference between the 2009 and 2008 models are ceramic bearings and the 2009's are a smudge lighter and come with red nipples. Nothing you'd really notice.