Yes, well worth it! I like all the maps, and honestly I think maybe Strike is the worst one of the bunch. I wasn't expecting that at all!
Carnival is the best one, I think. It's really fun to play and it's very easy to learn, there are good shootouts to be had in pretty much every area and every style seems to work. Trailer Park is up there too, but so far it's been pretty campy. Lots of fun to run and gun in when you're not getting camped on though, and it's bursting with fun little details. My favorite is the 50 beer cans and 5 kegs strewn around a picnic table. The massive collection of pink flamingoes is pretty good too. :lol Vacant works great and looks fantastic, it's obviously an IW favorite since they've put a lot of nice work into it. Strike works well, but just isn't that much fun to me. Pretty standard map.
Fuel is absolutely enormous and Bowling's talk of it "rivaling Overgrown in size" is BS - it's way bigger! Unfortunately, it suffers from Derail syndrome where very large areas of the map go unused, which is sad because almost all of the map is pretty well designed and you could have good battles pretty much everywhere.