My 2 cents if it matters to anyone. Last night I strung up a steam 99s with bhb7 at 32 to see what the buzz was about. I normally us OGSM/TCS at 54. Mostline baseline games with a big hitting partner.. ex-college 5.5 player. 90 minutes session. As others stated the experience was not what I expected at all. First thing I noticed was the buzzing of the strings. It was very pronounced, and annoying. Second thing was the easy access to power at low swing speeds. I then noticed that the power dod not ramp linearly.. There seemed a law of diminishing returns. 75% swing speed as oppose to 90% swing speed produced almost the same ball for me depth wise. It is possible that the full out swing was producing more rpm's but I did not get that impression. The ball DID move faster that my normal setup. There was more rpm and the trajectory actually seemed a bit lower as I adjusted. I'm normally a full western, but I felt very comfortable in semi-western and smashing the ball flatter and lower over the net. This was surprising to me. Volleys were much nicer compared to full poly at a higher tension. IMHO this is where the lower string tension really shines. Backspin slice volleys were butter smooth, punch volleys were easy power. Drop volleys had lots of bite. They didn't float as much as I expected. I did not serve enough to have a real opinion. I was concentrating on baseline and some volleys. Now the bad. I felt an acute lack of control when I was not able to execute a full swing. I don't mean a fast swing, I mean the full technique. Getting jammed at the baseline where you need to grab it low and flick it up for example. These shot FLEW. I would have to re-learn these shots. Also as I tired into the last 15 minutes I noticed my forehands getting more out of control as I throttled back the RPMs. The worst part for me was two fold, and mostly in my head. First was the vibration. I HATED it. I did not like it at all. I can't stress this enough. I lick a crisp contact and even though I'm pretty sure the initial contact was crispish, the on going vibration was annoying as all get out. Even after 90 minutes and continually trying to ignore it it was driving me nuts. The second was the sound. There was none besides a twang. A weird twang. An unholy twang. I'm used to positive feedback from the ball strike. This was just odd. I might be able to get used to it... might. all and all for me it was a mixed bag. I'm not going to discount it right off the bat. I'll keep a stick strung with it in my bag and experiment with it from time to time. I'm curios to see how it servers. I'm guessing I'll get some huge serves out of it.