I've been through the same route.
I have 2 TC95 (V1) 16x19's which I've used as my only racquets for a couple of years. Both came as 320/305 . I add an overgrip & dampener. So they were around 344g and 310 (10pts HL) in playing form. As an experiment about 6 months ago I shuffled the weights in the pallet and removed about 6g, to get them down to around 338/319 (8 pts HL), which I preferred. I didn't really notice the loss in plow through and found it a bit easier to keep the pace up after 3-4 sets (we play two consecutive 2 set matches in a our regional doubles leagues).
I was fortunate to acquire a used K7 (1st batch) at a low enough price . A good racquet, especially at the net and mid court pick ups. It was a bit lacking in plow through in stock form so I added about 1-2 g of lead @ 12 and a few g's in at the end of the handle to bring it up to around 333g and 7 pts HL. That was better, but after persevering for a few months I still found I wasn't getting the kind of pace and power I was looking for unless I had plenty of time to prepare (ie full swing etc) - which is ok in singles, but something of a luxury in doubles. I've passed this on to my 30 year old , who's never been lacking power, so he's enjoying it just fine.
I was teased by the tales of lower swing weight in the V3 models, and thanks to the TW F/Sale forum and helpful
@Grigore Petre , I've since acquired a TC 95 (v3) 16x19. If I had been able to afford new, I would have gone for the 310/315 spec - expecting that to be close to my slightly pared down 320/305 V1's. The spec I acquired was the 300/325 (6 pts HL) version. In its standard strung form, with an overgrip & dampener it comes in at 330/325 (6pts). I added about 7g at the end of the handle , so it's now around 337/318 (8 pts) - so very similar to my current V1's ( so that I can swap if string breaks during a match) . I've used it in half a dozen matches, plus practice, social sessions and I'm delighted with it. I don't have a means of measuring SW with any accuracy, but I presume from this thread that its somewhat lower than the V1's. It feels very similar when just picking them up and shadow swinging, but I've noticed a useful benefit in matches in maintaining the pace, with no noticeable loss of strength of shots, ability to return hard serves etc. It's hard to quantify but I find my serve working better (probably the improved swing speed), and volleys/pick ups more controlled. My match results have also improved , but that may, or may not be the racquet
I hope that helps