Sure thing. Finally finished my playtest of it over a few matches.
I will say that when fresh, this string (TB 19) is truly amazing for my game and racquet. It is very thin, but in a dense 18x20 MP racquet, you want a nice, thin string (as long as it doesn't break too soon).
Compared to TB 17, in the same racquet, TB 19 had easier power, spin and decent feel. I found TB 17 to have better overall control, and also much better longevity. I usually can get a good 6-8 matches on TB 17, whereas the TB 19 was done after 4 sessions. However, the pure spin and controlled power of those 4 sessions was a lot more fun than any of the 6-8 matches on the 17 gauge.
If I had the time and money to restring every 3 matches, I would use TB 19 exclusively. It also plays how I like it to immediately without break-in. I felt TB 17 needed a good 30 minutes or so to settle in to where I liked it. Perhaps this is simply due to a thicker string being stiffer, so perhaps a tension adjustment would alleviate the need for a break-in on TB 17.
In summary:
Spin, power & feel: TB 19
Control, tension stability & durability: TB 17
At this point, I now have to try TB 18, and TB 17-Soft, to round-out my test of this string. The differences are all subtle, but I will say that over the past 3+ years of string experimentation, the pure control and confidence boost of this string has me hooked. I've tried a good 30+ strings and hybrids, and if you need control and spin, and are willing to sacrifice comfort, feel and power... TB is quite awesome. It is great that it comes in so many gauges, to accommodate the array or racquet types out there.
If you have a tender wrist or any history of TE or GE, I would stay far away from this string.