I have had the pleasure recently of using yet another Amerimax product. It's called FLEX-Drain And its cheap, durable and easy to install. It is available at your local Home Depot and Lowe's.
The FLEX-Drain is a tubing that comes in 3 different lengths (3′ 6′ or 12′ ) but each length can stretch to 4 times its length! This amazing tubing can help you to keep water away from your home.
I had to install a couple of these FLEX-Drains to get the water away from my foundation. The ones I used were 6 feet but could be stretched to 25 feet. You can stretch them out and position them where you want them.
I simply attached the tubes to my downspouts and adjusted them to sit where I wanted them. If the tubes are too conspicuous for your taste, you can also bury them underground. If necessary, you can have the FLEX-Drain empty out 50 feet away from your home. In my opinion, because of the damage water can cause, you can't keep the water far enough away.