Just started playing a modern horror campaign with Savage Worlds using the 12 to Midnight default setting (Pinebox, TX).
We've only had one session but the players caught on quickly, made characters, and we jumped right into Last Rites, one of the 12 to Midnight modules.
SW is FFF: Fast, Furious, Fun! And I agree on all points.
The various setting books are amazing - I bought Solomon Kane and it's one of the best RPG books I've ever purchased.
I'm also really enjoying the 12 to Midnight horror modules. I checked a couple out because I wanted to run something published to try out the system. After reading through a couple, I went back and bought a few more. They are that good. Each one has great maps and amazing player handbooks. Very high production values.
Because I liked them so much, I decided to run the game in Pinebox and tie a few of the modules together for a mini-campaign.
Check out the Pinnacle and 12 to Midnight sites for more info:
[url]http://12tomidnight.com/
Just thought I'd add that the Pinnacle forums are very good. The community is great and very helpful. The authors post quite frequently as well.
No idea how it compares to 4E. I'd imagine quite differently. I actually became interested in SW after deciding 4E wasn't for me and I wanted a break from 3.5. I've been more than happy with my decision. It's exactly what I was looking for. I hesitate to call it "rules-lite" but it definitely moves faster than 3.5. It still has just enough crunch and tactics to offer deep gameplay as well though.