"i wouldn't say" is just an expression in this case...
like "the r3000z is good at gaming but i wouldn't say it's the best"
it's a personal qualifier, not a target phrase towards you.
anyway the compaq looks pretty sweet, the silver is really nice-- i'm actually not sure which machine looks better. i wouldn't go with the emachines if it was, for example, $300 more than the r3000z.
i think they compare like this in the weight/size --> 1.8 '' vs 1.6'' , 8.0 vs. 7.5 lbs