Not that big of an issue really for installing wood floors. You're cuts will be covered up by trim, right? Even a 32 tooth general purpose blade will cut sufficient if you don't rush the cut. If it's going to show, bring the saw blade into the wood slow, not fast & you'll get a clean enough cut.
If you are ripping on the table saw, that takes a blade designed for ripping. Miters generally need a blade designed for crosscutting. Those blades are different. More teeth generally means a smoother cut.