Don't really like all-in-ones - you get more flexibility with separates, that's my feeling anyway. My friend down the road is stuck, for instance, with a perfectly decent 24 inch apple screen, which has some kind of werid obsolete computer welded to it, and he is going to end up replacing the lot at vast expense, when were they separates, £300 would give him a screamingly fast (by comparison) replacement....An exaggeration, but not much of one.
They are convenient, yes. But for us, it will definitely be separates.
Peter