My humble opinion is - I think the Jepp plates are far nicer to use and read. I very much like the fact that everything is included in the airways manual - the equivalent of DAPs, ERSA, AIP, all TACs and ERCs - the fortnightly amendments cover everything. Once I got my head around where all the information was, I never looked back.
I do agree that the Airport Directory (ERSA equivalent) is not very well presented, and I generally buy an ERSA as well, especially as that's something that gets thrown around a lot in flight.
The holding diagram does show little sector entry paths, but it's not too useful - although I suppose it's a good visual cue to confirm you've planned and briefed the entry properly.
So personally I love 'em, have no desire to go to DAPs. And I've never got the calculator out, but after you allow for the fact you don't have to buy AIP or DAP or their amendments, or buy ERCs, TACs etc. again, the cost is probably quite good.