I used the novice marathon program this year for the Milton Keynes marathon and will definately use it again. For me being given exact pacing and distances to run is perfect, no trying to figure out % of max hr or whatever. I didn't think I'd be able to run at the paces they give for some of them and I did, that gave me more confidence as a runner that I can run faster and train harder than I thought I could. The best thing was not stressing that I needed to run more and more miles, like I had done in my previous marathon training.
I enjoyed the cross training, it meant I had time to do the other activites I enjoy (spinning, zumba, plyometrics) as well as marathon training and I got a break from running which my legs were thankful for.
I didn't get a pb for the marathon, the conditions MK were a nightmare and cross country was never my thing, however, I am faster now over the same courses that I ran in training leading up the the marathon. So I think it did work and will be following the half program for this autumn