Looking for Entire Cities (Preferably Low Poly)
I've picked up a few city sets for DAZ/Poser. I've managed to acquire a few of Stonemason's products, which are great for close scenes and even some wide shots. But I've bene looking for lately are city sets for wider shots. Really big cities, preferably with low poly counts. Anybody have any suggestions?

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What kind of cities?
Ancient, Medeval, Victorian, modern, post apocalyptic?
I would suggest the Dystopia series by Moebius87. The first two bits are on a permanent 100% off, but the next eight, not so much. They're actually designed to be laid out in large groups, and if you want to get down to street level you still can. When I started with Poser back in 2004-5, I got a pile of mileage out of them.
http://www.daz3d.com/cityscapes-and-buildings-sci-fi
The Dystopia stuff is kinda old, but a halfway decent computer from ten years ago could easily render a 5x5 set of blocks with a full skydome and lighting.
Check out Renderosity, there are several pre-made cities in the free areas and more in the store, but StoneMasons works is IMHO the best I've looked found. I've seen literally hundreds city models costing hundreds $$$ and Stones' are superior. You can also rearrange them and if you remove the bumps and displacements you can clone the individual buildings, move and rotate them and build much bigger distance scenes without taxing your computer or prolonging render times. I've used UE2 for ages, I bought it the week it came out and I'm always finding something new with it, but If another urban sprawl comes...
Modern cities.
Whitemagus over at Rendo does excellent modern architecture.
The Dystopia Series also comes with a skydome with additional buildings as part of the dome's texture. This can help expand the depth of renders using Dystopia or any other city render. I've used the free editions of Dystopia a while and I like them for futuristic/modern cities. I'd suggest that you can get more bang for the buck by making sure you have a couple of more high-poly, realistic buildings in your foreground. I also suggest using an atmosphere cam for city renders. Many of Stonemason's products come with these as a bonus. I think kitbashing is really the answer in creating model cities for renders.
There is also the Dreamland Models series very good quality and work very well in Daz Studio they are up to number 20 in the Movie Sets, City Block series and there is about 9 in their Low Poly series.. About the only problem with the series is they are quite expensive..
Do you have any renders in Daz with these sets that you can post? These have been on my wishlist for awhile, but I'm leary of buying one without see a Daz render first. Have you rendered in both 3Delight and Iray?