I've read a lot about DCM speakers online and
owned quite a few pairs now, and there is not as much talk about TF-V series compared to the older ones.
This thread about the TF-V10.0 indicates it was still in the "true" DCM era when Steve Eberbach was still at the company (he left in 1999)
https://audiokarma.org/forums/index.php?threads/dcm-timeframe-v-10-0.568778/
This would also make the 6.0 a proper DCM speaker from the Eberbach age.
According to the above thread, on the TF-Vs the front-facing drivers are all on a single forward face, instead of on two faces angled away from each other like the Time Windows. However, the TF V-10.0 does have rear-firing tweeters on the angled faces on the back. I'd guess the 6.0 is the same basic design but with 6" woofers and maybe only one pair of rear tweeters.
I haven't heard the TW3s, but I have heard the TW1as (great) as well as the Timeframe TF-600s. The TF-600s are probably more similar in design to these - a flat front face, 6" woofers, and rear-firing as well as front-firing tweeters. Those sound amazing. I would have high hopes for the TF-V6.0.
For me, the Time Window 1as are the best I've tried yet in my space with my setup. The stereo image is really impressive even when sitting off-axis. But due to the odd shape of the Time Windows, I'd guess that any pair of TWs will either be fantastic or a bit of a dud, depending on your space. Also, the 1as really came alive with a ton of power feeding them; my cousin who had them before found them a bit lacking in lows and highs in his lower powered setup.
Obviously you have to check out both and report back.