U2
I changed from AsA AIP to Jepps about a year or so prior to my employer deciding that all Tech Crew would use Jepps for standardisation.
My reasoning was that I was sick and tired of wading through an Aussie ammendment and then having several pages of manuscript ammendment Notams the next day when they found the typos etc.
I was also unimpressed with the late delivery of operational documents when there were really significant airspace changes, such as in Dec 1991.
I was not satisfied with the level of dis-service I received and thus chose to go Jepps, as to the best of my knowledge, they were/are the only alternative.
Jepps make their fair share of errors. However, a quick phone call or e-mail and they will correct it and the ammendment will be published ASAP, rather than quarterly with AsA.
I can't comment on the cost anymore, other than to say that I've just renewed my 'Australia' (not Australasia) Jepps for AUD$247.xx.