I may be the exception proving the rule, but I didn't find the CSW V1 or V2 a significant improvement over the TX. Although the included TX rim is very toyish, it's button arrangement is actually excellent, and the rim is quite responsive.
Obviously, TX build quality and aesthetics can't begin to match either CSW iteration, but IMO, FFB and steering feel are excellent. Of course, excepting the new (and counter intuitive) DRI setting, I found the CSW V1 and V2 FFB and steering feel very similar, and was underwhelmed by the latter, especially given early user reviews.
I guess I bought into the hype, and was expecting a radically different steering experience.
Thankfully, the same hype enabled me to sell my V2 on eBay for $1050, allowing me to confirm my Accuforce order (the tab was open for two days in anticipation).
I'm obviously hoping the AF hype is as justified as it seems.
That said, I only bought a TX after my CSW V1 steering hub came apart a few weeks ago, and as of yesterday, no longer powers on, so I'm not sure Thrustmaster QC is any better than Fanatec's. Then again, I've owned a CSR Elite, CSP V1 and V2, a CS shifter, two CSW V1s and a CSW V2, without any problems prior to the steering hub issue discussed above. Others haven't been as lucky, but Fanatec customer service has supposedly improved, if not their product durability.
Thankfully, Amazon sent me a new TX by next day air, obviating the need to deal with Thrustmaster customer service, which I had been dreading. Moreover, I didn't even have to send the broken TX back before receiving a replacement!
Long story short, the TX feels as good as any wheel I've owned, but I can certainly understand the CSW V2's appeal. The latter will certainly look nicer, likely last longer, and the TX pedals are pretty useless (although a $10 mod supposedly increases their utility by orders of magnitude), which diminishes into the TX's value somewhat. Ironically, while highlighting their modular ecosystem, Thrustmaster packages the TX with an unpopular (though useful) wheel rim and pedals, instead of emulating Fanatec and selling ecosystem elements a la carte.
Of course, if you're willing to spend $1000+ to build the ultimate CSW V2, you should seriously consider a Direct Drive wheel. Perhaps shockingly, the Accuforce may turn out to be the best value of all three at $1750 (if you also require Sim Commander 4, otherwise its $1660).
Best of luck with whichever wheel you choose, and don't forget, a quality set of pedals may be the most impacting upgrade available short of moving to direct drive.
Henk