I finally had a play test with a TC100 V3 27.5 70RA 310g 6pts HL that a friend gave me. Strung with VSTonic+Feel/PRCW18g @59(10%Prestretch)/56lbs, specs modded to 345g/6ptsHL strung. Swingweight hasn't been modded yet because I want to see how it plays, the string pattern being more open than my SV98+ and already crept up to the SV98+ 346g without hoop weighting. I have to say it surprised me in how much feel there was. It is very plush and creamy like a RF97, even at 70RA, but without the weight. It is surprisingly "flickable" and swings well. It did require a timing change, despite the similarity in weight.
It is a definite feel controlled power frame, where you can swing as hard as you want, vs a powered control frame that is my SV98+, which gives great reserves of power, but has a narrow band of feel. The TC100 feedback is very nice, but for such an open pattern, I expected more bite and launch angle. It isn't there. I had to adjust for more spin for every stroke.
Personally, if I were in my late 30s, I'd have jumped on this frame. It has great feel and dampening for a 70RA, power is decent but it's about the ability to control the biggest shots. Back then, I'd love this feel and forgiveness, and could've done without the shanks of the 90 frame that were increasingly creeping in every year. Now, I can forgo the feel to be able to hit bigger when I need, as my fast twitch muscles have atrophied with age. YMMV!