After playing for years with a Vantage 95 (basically the very first gen TC95) 16x19, I recently made the switch to a TC97 18x20, 320g/10HL and I've been absolutely loving it. The TC97 is slightly stiffer on paper vs the TC95 (66 vs 63), but from most people here, it's not so much that it FEELS stiffer, it's just where it flexes that's the difference between the TC95 and TC97. After strings, overgrip, dampener, and head tape, it came in at 12.2g strung, about 7p HL. I haven't even messed with lead tape yet cuz I love how it hits right now in its stock form.
The general consensus is that the TC95 has a bit more free power over the TC97. Both racquets give that solid, plush THUMP on impact and are very comfortable.