Get Jeppesen's! You will end up using them anyway at some stage, you might as well start out that way.
As for late amendments, I have used Jeppesen for about 9 years and have only had late amendments on 2 occasions. If you ever have any problems (lost plates etc..) give them a call in Canberra and they will get if fixed ASAP! All in all a very professional bunch.
PS: If you ask around you can often pick up a set of Jepp's for a lot less than $590, that way all you need is the amendment service!