There is so much out there! It is definitely a difficult choice! Talk to your Lowe's Flooring Specialist about the type of carpet you are seeking and they can point you in the right direction.
The Carpet and Rug Institute says that regardless of which fiber you choose, the construction of the carpet is what makes carpet durable. For durable, heavily trafficked carpet you want to look for a dense construction (you don’t want to be able to easily see, or feel the backing of the carpet through the fiber). Shorter pile heights perform better in heavy traffic areas (like entryways, stairs, halls, playrooms) so choosing a pile height with a ½ of an inch or less will be more durable. If choosing a cut pile carpet, a tighter twist will be more durable than a looser twist. If choosing a Berber carpet, the smaller tighter loops will be more durable than the larger looser loop.