The Iron Bark Dark is great. I add 1 can of Morgans liquid choc malt extract, 250gm dry dark, 250 gm maltodextrin, steep 250gm choc grain and about 24g Kent Goldings. Use Safale instead of the kit yeast
The Morgan's Royal Oak Amber is good too. That with a kg of light dry malt and 24gm Kent Goldings makes a good James Squire Amber clone.
Those 2 are my 2 "staple" beers that I make sure I always have some stock of.
I've also used the Blue Mountains lager once and that turned out real nice too. I can't remember for sure but I think I just used a TCB brew booster pack and that was it... I plan on using that can again but with maybe 1kg light malt and some saaz but haven't got around to it yet... I keep brewing darker beers
Rich