Of the three attacks you mentioned, I rank the 2005 Ashes attack as the best. The four-pronged pace attack comprising Harmison (17 wickets), Hoggard (16), Flintoff (24) and Jones (18) shared the spoils with solid back-up from Giles (10).
I would normally rate a team that wins an Ashes series 5-1 in Australia very highly but in 78/79 the Australia team was badly depleted due to Packer's World Series. Nevertheless the pace trio of Botham (23 wickets), Willis (20) and Hendrick (19) backed by the spin of Miller (23) and Embury (16) was a balanced and effective attack with Lever and Old adding depth.
When it comes to England attacks involved in Ashes wins in Australia, 3 spring to mind.
The 32/33 series, won 4-1 by England, is well-remembered as the Bodyline series with the main 'villain', Larwood, capturing 33 wickets. He received good support from Allen (21), Voce (15), spinner Verity (11) and all-rounder Hammond (9).
In 54/55 England bounced back from a drubbing in the first Test to win the series 3-1. This series is best remembered for the performances of Tyson (28 wickets) but there was a balanced support act comprising Statham (18), all-rounder Bailey (10) and spinners Appleyard (10) and Wardle (10).
The 70/71 series comprised 7 Tests with the 7th Test added after the 3rd Test was washed out without a ball being bowled. 4 Tests were drawn but England took the honours 2-0. There were 4 strike bowlers used with Snow (31 wickets) the most effective. P. Lever (13), Willis (12) and Shuttleworth (7) shared the supporting pace bowling while Underwood (16) and Illingworth (10) provided spin options. All-rounder D'Oliviera (6) gave extra depth.
Of these three series I would rank the 32/33 attack marginally ahead of the other two. However, the other two attacks were noteworthy in that they both had 2 quality spinners supporting the quicks. The same can be said about the 78/79 England attack. This has not always been the case with England attacks in Australia.