Villa spent £40m before the transfer window closed on Tuesday in capturing Stewart Downing (£12m), Stephen Warnock (£8m), Fabian Delph (£6m), Richard Dunne (£6m), James Collins (£5m) and Habib Beye (£3m).
And, even though O'Neill lost the services of key players in skipper Martin Laursen and midfielder Gareth Barry, he is confident Villa are equipped for the challenges ahead.
Future promise; Delighted Villa boss Martin O'Neill believes his new signings, like £8m recruit Fabian Delph, make his side better equipped than ever before
O'Neill said: 'Am I happy with my overall business? I couldn't be more pleased. I think we have strengthened the side. It's been very pleasing indeed.
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