Well, I had the opportunitty to demo an aerogel 100 this week, so I wanted to compare the two, play them both in stock form with the same type of string and compare the two frames against one another. I strung up my aerogel with klip excellerator at 63#, the 100 has dunlop mfil string, probably strung at mid tension. A little about me:, I am 47 years old. rated 4.0, I play mostly baseline tennis, but like to close in to the net when I can. I hit with an extreme eastern forehand grip and an eastern 1HBH grip. The 200 is my regular frame. Feel in hand: My 200 weighs in at 12.3 ounces strung with an over grip. The 100 weighed in at 11.9 ounces strung with an over grip. The 100 is 9 pts. HL, the 200 is 5pts HL. Boh frames feel great in hand, but the 100 is clearly more head light and swings much easier. Groundstrokes: I found both racquets great off the ground, but for very different reasons. The 200 has a pretty good swing weight and rewards good preparation and mechanics with big shots off of both wings. Control is good, spin is easily produced and comfort is good. I find that when you miss the fairly small sweet spot on this frame, unlike the 200GMW, where a mishit usully resulted in a short or netted ball, the balls usually sail long, probably due to the stiffer frame. I find that when I use this racquet,most of my shots are similar, driving heavy topspin shots, with fairly low net clearance. The AG 100 feels light in hand but delivers a solid groundgame in a different way than the 200. Control is simply just excellent with this frame. You can hit pretty much any type of spin with ease. I found myself using height, spins and mixing up pace much better than the 200. I thought the lighter weight would be a disadvantage against a big hitter, but it was solid as a rock. I could place the ball anywhere on command,and it cups the ball beautifully. My 1HBH really lit up with this frame. What it lacks is the weight and pace of shot that I get with the 200. Different strings and some mods could help this, but again, this is a stock comparison. Less power, but more options. Volleys:I found both frames excellent at the net. The 200 gave me more punch, the 100 gave me more feel and has better mobility. Both are solid and very little seperates the two. Serves:This was the hardest comparison for me. The 200 provided me with more pace, a better flat serve and excellent placement. Slice and topspin serves are OK but nothing great. The 100 again gave me more options due to spin capacity and being headlight, but less pace.I felt it was a more comfortable frame to serve with. I had equal success using both of them in matches and with time I could probably crank up the horse power with the 100. Serve Returns: The 200 is a great stick to return with. Slice returns stay low with bite and it handles pace very well. It is an easy frame to go on the offensive with. The 100 was equal to the task except at times I struggled with high kick serves to my backhand side. This was the only time I noticed the smaller head size and at times struggled to get balls back in play with any type of authority. Summary:I love both of these frames. Comfort is excellent with both racquets and I never felt any discomfort with either frame. I found in matches that I went for more with the 200 and got better pace and more winners, but also more errors. I felt that the 100 gave me more options, a bigger sweet spot , but I left more balls that were easily attacked and I had to work the points differently. I actually had more fun playing with the 100. I have never felt comfortable using a sub 12 ounce frame, but this frame simply works. The sweet spot is actually bigger on the 100 than the 200, so I had no issue using a 90" head and my unforced errors were fewer with the 100 than the 200. The 200 plays well with gut or a good multi or synthetic, and I imagine the 100 would do well with a comfort string as well. I found both frames excellent and I could happily use either one on a regular basis. I currently use the 200 and enjoy the frame, but will at some point probably pick up a 100 and see how it performs when the indoor season begins.