Hi,
I bought it -- and I love it!
While RW is still my overall favorite (because of the editor), TSW2 is, as far as train driving experiences go, currently the one I find the most enjoyable.
I have yet to run Sand Patch, simply because the Bakerloo Line is wonderful! I'm having such a blast with the old tubes and it is rather challenging, too (*very* tight timetables!) And it looks great, both in and outside the tunnels.
The new German route is fun, too -- kudos to DTG for including a high speed line that isn't a "proper" high speed line, but rather an upgraded traditional rail line. Those bespoke high speed rail lines are generally very boring (lots of tunnels, hardly any stations, and miles and miles of concrete walls along the tracks) but the Cologne-Aachen line is beautiful and fun.
I'm happy with my purchase.
Cheers,
Michael