To me, it was so worth the wait, I waited 3 months for mine.
Better? Yes I think it's a better wheel, but the price difference does not reflect how much better it is, it's quite expensive compared to the T300.
Something to think of is whether or not you think you'll be happy with the stock wheel on the T300.
I wasn't, I found it too small (280mm, compared to 300mm on my previous GT3 wheel and 320mm on the BMW GT2 rim I now have) and the rubber made it feel really cheap, after playing for 20-30 mins it made my hands sticky. Now I race with gloves so perhaps that wouldn't matter anymore but it would still be too small.
So I started looking at buying a DSD adapter to fit a custom rim, but when I started adding up the costs, rim, adapter, paddles for shifting, some buttons on the wheel, a plate to hold buttons and paddles, electronics to run it through, it all started adding up to costs approaching a CSW v2 with a BMW rim, and that's when doing all the work myself.
So I figured I might just as well return my T300 on a refund and buy the CSW v2 instead.
One more thing that pushed the decision over for me was the fact that I knew that even if I modified my T300 and got happy with that, I would still drool over the CSW v2, and we all know that buying cheap is expensive cos you end up getting the expensive option anyways.