The Falken Ziex line isn't that great of an All Season tire. The ASX is a much better choice if you need an all season tire and want one that performs well. If you live in an area with little to no snow, the Kumho SPT grips much better in the dry and in the rain because it is a dedicated summer tire. If you want a really sticky tire and don't mind them wearing out quicker, the Falken RT 615 is good as is the Potenza RE01R.
The G-Force line is fine, but the Kumho SPT is a better summer tire and usually cheaper depending on the size you need.