Quinton de Kock enjoyed his 178 against Australia, but claimed there were some innings he has enjoyed more.
The opener made his runs from just 113 deliveries at Centurion, including 16 fours and 11 maximums as South Africa cruised to their victory target of 295 with six wickets and more than 13 overs to spare.
De Kock's score was the second highest by a South African in one-day internationals, behind Gary Kirsten's 188 against the UAE in 1996, as the Proteas took a 1-0 lead in the five-match series.
"It was the most free [flowing] knock that I've played," said de Kock. "But I've played a couple of other knocks that I've enjoyed more, where I've had to work hard for the runs.
"The wicket was quite nice to play on, it allowed me to play my natural game.
"Hopefully there will be a couple more wickets like that in the series. Then we can have some more fun."
"It was one hell of an innings," said opposing captain Steve Smith, who felt his side let themselves down with the bat as much as with the ball.
"I thought we started off quite poorly with the ball, we gave him a few freebies to get away. We were a bit too short and a bit too wide at times.
"And from there it just looked like he got in a rhythm, and it felt like every ball was going to the boundary at one point.
"We got a nice wicket to bat on and we gave some opportunities away.
"We got a lot of starts and nobody was able to go on and get a big score like Quinton de Kock did.
"So going forward it's the responsibility of one of our top four (who combined scored less than de Kock) to post a big total, and if we do that then the team total is going to be big as well."