Polished concrete is a premium floor; epoxy is not.

there is a moisture seal available with epoxy if you have a damp slab-- no matter what make sure the installer does installation correctly - needs to have a grind (even though slab is new) a primer coat, base and top coat for long lasting durability- DO NOT LET HIM PAINT IT

Go ahead and plan for a finished concrete slab BEFORE the concrete guys show up to pour the slab/basement. It is CHEAPER to have the concrete mix ready for a FINISHED concrete floor rather than trying to create a concrete floor AFTER the slab has been poured.

You will pay a snick more at the time of the pour because the slab guys will pay a bit more attention while the rake out/level out the liquid cement. They can also arrange to have a second topping to apply once the slab is cured 'enough' so that the RIGHT mix of concrete is ready for a finish. You need a HIGH grade concrete (not the stuff that pours out of a cement truck) to get a finished concrete floor. Doing this BEFORE the house is built is SOOO much easier/cheaper than a retrofit.

So long as your situation is JUST storage...go for an epoxy. It is what you want. If you have ANY plans (like 10 years from now) to create a living space out of the basement I HIGHLY recommend you take the time to get a polished concrete down there.

But then again, many people HATE living on concrete and will eventually cover it up anyway (life span of a finished concrete floor = 7 years).

Agree with the above , just do epoxy. Mine has held up for way more than 10 years, can’t remember exactly when it was installed. Looks great in the garage.

Thanks for the advice guys - appreciate it!