I am installing concrete countertops, and have planned everything out except a fairly basic component: the concrete I should use. I plan to add color dye to the concrete for uniform color, and (obviously) want a smooth, long-lasting finish.

Someone recommended I use Quickcrete 5000 because it has more Portland Cement in it. Does anyone have any experience with concrete beyond sidewalks and foundations such that they could recommend a good product? Does the product I use matter much, or is it all a matter of how well I trowel it?