I don't think we've ever considered any core projects. We have 1 prime in which we encourage members to contribute to.
If you look at the newest stats pages, you'll see we have 300 DCers, maybe 60 actually crunching. But only about 20 post here.
Those 20 would follow the prime project, the others would continue their favourites.
In the past, no. 1 proj was Ubero, then predictor, d2ol and now 17.
We'll be having a vote in a few days what the next no. 1 is. But we'll still dribble away on the others.
My position would be, ignor boinc (unstable imho) and concentrate on f@h, grid and seti classic.
Phew, that was a long post, Dave you'll be proud of me ;)