I got that one about 10 days ago.
– thingverse has a lot of files on. A LOT. Keep in mind the terrain file does not need to be epic scale, the printer software will easily let you scale any file to epic scale. Buildings would also be very easy to make files of for yourself from scratch.
– yes, results are great. I'm using it to print epic models at half (3mm scale) size.
This was my first working file print (other than test file from printer) epic leman russ file from thingverse printed half size on a 0.05mm layer hight.

Problems: user error getting it work first time, mess, chemicals/ventilation. Spent the first two days with it sulking and saying i would send it back, then loved it after first good print. If anything goes wrong it is messy to clean up and re-set, washing uncured resin off with isopropyl alcohol. Until cured the resin gives off VOCs and the process works better at 25c (which will be a problem for me as the room i can get ventilation in to run it in will also be cold over winter).
Wish id got one years ago. Game changer for small scale wargaming. There are so many files available to print and 3d modelling non-complex-curved/non-organic stuff yourself is easy.