I decided to try these strings out after lots of interest around here. I purchased 2 sets of 16 gauge, natural and received them within about 5 days of ordering them. The shipping time is not fast but acceptable. They arrived in a clear, sealed package and were not relabelled in any way. I decided to be as unbiased as possible and not get caught in any hype, good or bad. Racquet to be strung: Wilson Ksix one 95, 16x18 pattern, approx 6 months old and in good condition with no issues with grommets or the frame in general. I also decided to go with a full gut job so I could test these strings only with no other strings involved in the process. I made notes along the way during the stringing and here they are: 1) Opening the package, coil memory and pre-stretch: 2 sets of 20' each. After opening the package, I clipped the 2 plastic ties easily and the string showed typical gut coil memory. I ran my fingers across the entire length of the string and felt no major issues with lumps or bumps. It has a slightly rough feel. It appeared to be very consistent and there is not much coating. Also, the gauge feels a tad larger than 16 but after checking it with my stringmeter, it measured out at 16. It still feels a bit thicker than the VS that I usually use. This string feels like "old school" in that there's just not much coating. I feel that this could cause some issues during stringing (more on that later). I pre-stretched them and they felt very typical of gut in the pre-stretch other than they were a bit stiffer than VS during the pre-stretch. The stretch took out the coil memory, for the most part. 2) Stringing the mains: All went well with the mains. I really took my time on these making sure not to kink or marr the strings. The strings did go through the grommets pretty easily, for the most part, but there were a few times that it had to be "coaxed" through. No worries on them but I wouldn't want to have any thicker strings. Tying the knots were easy and gave no problems. 3) Stringing the crosses: I did not take any additional measures on the crosses but I wish I had. Since there is minimal coating, waxing or other methods may be in order here. The strings are gritty and a little difficult to weave. I couldn't push weave them very easily on the first 3 rows but could resume it through the half-way point. Half-way through the crosses, I had to make sure to be careful to fan the strings because of the notching potential. Tip: Make sure to cut these strings to the proper length so you don't have to pull any more string through than necessary. They are pretty rough on the fingers and are "sticky" through the pulling. Prepare for your fingers to go through a bit of a rough treatment. The last half of the crosses were brutal. I had to weave 1/2 way across first, pull it, and then weave the other half and pull it. It was getting progressively more difficult to pull the strings through as they were fighting me, especially the 2nd half of the crosses. Wow! These were very difficult and I felt at the time that these were not going to last long, or at all, after I get through (if I get through!). 4) After the stringing process came to an end, I felt that this was one of the most difficult strings I have ever strung. However, the mains were pretty good but the crosses fought me and my normal 30 minute string job turned into 50 minutes. If I ever string a full job for a customer, I will have to charge extra for the time. Perhaps things would have been different if I had waxed the strings. I would prefer that Gaucho Gut try to get a bit more coating on them prior to sending the out. This being said, most people will not go with the full gut job and will hybrid them. I suspect that this will go much smoother and the coating on the crosses (of hybrids) will help the weaving process. But, at only $14/set, a full job is very cost effective. 5) I took tension readings (with a Stringmeter) and found the following string tensions losses: 1 hr after stringing 1.25% tension loss 2 hs after stringing 3.04% tension loss 3 hrs after stringing 3.57% tension loss 4 hrs after stringing 4.46% tension loss 24 hrs after stringing 5.71% tension loss playing 2 1/2 hrs 6.79% tension loss playing an additional 1 hr 6.79% tension loss I took tension readings at 9 points across the racquet face and calculated an average. The racquet stayed in the stringer for testing and did not move until taking it out to play. It looks like the tension has stabilized after playing 3 1/2 hrs. This tension loss is extremely good and as good or better than any other string I know of. I'll check tension regularly and update this page. Note: play was indoors and the first play was done approx 26 hrs after stringing and the 2nd play was done 50 hrs after stringing. I will post a play test of this soon.