I'm using a mix of Hal Higdon and the NYRR Online Trainer for my Bi-Lo Myrtle Beach training, and I gotta say, I'm confused half the time about what I should be doing. :-)
I'd stick w/ the NYRR plan exclusively, because I like the way they map out my speedwork, but the way they progress the long runs so quickly (and so high - they have me going up to 23 miles - at my pace? are you kidding me?) concerns me. So I use the Hal Higdon long run progression, and the NYRR mid-week schedule.
So, 6 miles tonight, steady pace run.