When selecting a tennis racquet a good rule of thumb is to try and select a frame that can grow with you. Super oversized  frames (115-135) are great for older adults who have shorter, more compact strokes and may need the extra power. They are more forgiving on off-center shots and don't require the user to take a full swing to get the ball deep into the opponent's court. Oversized (105-110) frames are popular with almost everyone today. Andre Agassi uses a 110 inch oversized frame. Venus and Serena Williams also use them. The appeal of an oversized frame is that it gives added power without sacrificing control. Mid-plus frames (92-102) are the most popular frames for club and tour players because they offer outstanding control and are usually a bit heavier than oversized frames. Standard size frames (80-85) are used mostly by touring professionals and require a higher skill level because of the smaller head and sweetspot. Most standard sized frames are in the heavier range from 11.0 to 12.5 oz. When selecting a frame don't neglect the strings. If you suffer from arm, shoulder or wrist problems try a multifilament string which is a much softer forgiving string. Natural gut is the most expensive string and is comprised of cow intestines. Uses swear by it's feel and comfort level but at prices ranging from $20.00.-- to $45.00 it can be a costly string. For frequent string breakers, a kevlar or aramid string can offer long life but doesn't offer as much feel. Some players report arm problems from using kevlar. Polyester strings are also an option for frequent string breakers but they can be very stiff feeling. Many people feel like polyester strings don't hold their tension as long. Another plus for polyester strings is that they don't move as much. Most players opt for synthetic gut which is an affordable string that offers a clean crisp feeling and doesn't sacrifice control or longevity. The lowest cost string is nylon which is appealing to recreational players because it lasts for a good while and feels somewhat similar to synthetic gut.