Interesting discussions here going on about the TF40 305/315 and indirectly about the TFight 305 XTC....
I have played for a longer time with the TFight 305 XTC (and also 315 XTC) but made the switch to the TF40 305 directly when it was available here in Europe.
I really enjoyed the TFight 305 XTC and the way it performed, and to my opinion it's by far the best stock form playing frame in the whole TFight XTC range.
Stability, control, and plow (due to the high SW) were very impressive, especially for a frame with a static weight of just 305 gram.
The only less positive thing I experienced with it was some lack of speed and maneuverability at net, so I decided to lower the balancepoint 8 mm. with some extra tail weight; achieved by milling out the stock foam filling in the shaft and adding 8 gram of black Sikaflex 221 (known for its low volume/high weight ratio and very good dampening capacity)
After the addition of 8 gram Sikaflex the balancepoint lowered from 33,4 cm (strung + overgrip) to 32,6 cm and the overall static weight raised up to 334,5 gram.
With this customization it was like ''the icing on the cake'' for me and my TFight 305 XTC played great and absolutely well balanced, just the way I wanted.
After a couple of months playing with my TFight 305's I got the chance to buy a new TFight 315 XTC for an interesting and low price, so I decided to buy it to playtest it as a comparison with my TFight 305 XTC.
After just 15 minutes of playing with the TFight 315 XTC it was clear to me that it (despite the higher static overall weight) definitely lacked the stability, control, and plow through of the 305 XTC.
The differences were most noticeable with heavy groundstrokes and returns. Even after adding some lead tape at 3/9 position my slightly customized 305 XTC outperformed the 315 XTC completely in almost all aspects.
When I discussed my experiences with an employee of Tecnifibre (who I know reasonably well) he told me that the 305 XTC is the only frame in the TFight XTC range which has an exeptional addition of three integrated stabilization parts which are located at the 3/9/12 position in the hoop of the frame.
These integrated stabilization parts provides the better stability and plow, but are also the reason for the reasonably high swingweight of the 305 XTC.
I do not know yet (have to ask my Tecnifibre ''source'') if the above mentioned stabilization parts of the 305 XTC are also integrated in the frame of the TF40 305, but I shouldn't surprised if this will be the case, although the difference in swingweight between the TF40 305 vs TF40 315 is smaller than the difference in swingweight between the TFight 305 XTC vs TFight 315 XTC...
In several posts here I read that people mentioned that the difference in swingweight between the TF40 305 and the TF40 315 is minimum, but personally I have the opinion (based on experiences) that even smaller differences in swingweight value are absolutely feelable/noticeable in the playability of a frame, especially with control oriented frames like the TF40 which delivers lots of feel and feedback.
There must be a technical based reason for the better reviews that the TF40 305 is currently receiving, but personally I'm having absolutely no regrets that I went for the 305 gram version.
Even as with the TFight 305 XTC I lowered the balance point of my TF40's with some extra tail weight in the frame shaft to get a bit more maneuverablity and now it's completely according my personal taste and preferences
TFight 305 XTC (before foam removing and filling shaft with 8 gram of black Sikaflex)
Balancepoint (strung + overgrip) of 32,6 cm (instead of 33,4 cm in stock form) after the Sikaflex addition
Swingweight of 337 (stock form, exept the addition of 8 gram tail weight)
Overall (strung, overgrip, plus 8 grams of Sikaflex) static weight of 334,5 gram
Two of my three beloved TF40 305's, one strung with Luxilon Element Rough 1.30 mm. and the other one with Völkl Cyclone 1.25 mm.
These two strings are my personal favorites in the TF40 305 after a test period with Ice Code, Black Code 4S and RS Lyon