Read through the very long Mfil-300 thread and a few others but I didnt really get the information I was looking for. What I'd like to know is what Mfil-300 users believe to be the difference in feel between their racquets when stock and then when modified. I know a lot of guys will say more stable or more solid but I'm hoping for something a bit more descriptive than that. Also, Im curious to hear how the Mfil300 performs with strings close to my preferred choice of either natural gut, 17g or Gosen JC 16. Im going to demo the Mfil-300 (and the Aerogel300) and know that because its a demo racquet I'm going to have to play it stock and with either cheap synthetic, poly or poly/syn hybrid strings, none of which I like. Normally that could be enough to make me dislike the racquet. But, if I can speculate, based on the experience of others, how the feel might be altered with weight and strings then I can concentrate more on just the results I get. Hope all of that made sense. Thanks.