Hi, Based from people's advice from this board, i am trying to replace my wilson 3.6 (338 SW, 74 Flex, 9.3 oz). I just couldn't get a a headlight, heavy racquet that feels right for my game. The 2 that i like are Volkl Cat 4 and Prince O3 Red, they still have high SW (314 & 300) but they are heavier (about 10 oz) and flexible (65 & 67). I have demoed them for a couple of hours and i'm not sure if they can cause me arm problems in the long run. But, they are really the closest ones that fits to my game. Considering where i came from, i am willing to take the risk. But, i saw the specs of O3 white it seems more arm friendly. I just can't get a demo racquet in my area. I'm at a point now that i don't want to demo anymore and i'll just buy the O3 red and anything close to it. How does the white compared to red? The O3 red has a little bit more power for my game so, maybe the white is perfect for me. The problem is, it is only 100 sq in compared to 105. Is that a big diff considering i came from a 115 sq in? Is the power difference significant?