I would suggest that you decide how much effort you want to put into your landscaping maintenance to help direct your decisions. Flower beds will take more time than simply choosing some nice greenery, shrubs and grasses. Rock might be a really good choice depending on where you live. Some small boulders or large rocks will help minimize sharp angles in the yard. Have fun with your landscaping decisions. You will find some great landscaping ideas on HGTV's website.