Rooney netted 12 minutes from time in Sunday's smash-and-grab result to earn United a fourth consecutive success over their fierce rivals, in the process scoring his first goal at Anfield since January 2005.
But Rooney insisted the sensations that accompanied his first strike against Liverpool on their home turf in 11 years outweighed the latter feat.
"It's great obviously to have records but I don't think that will beat the feeling I have now," Rooney told Sky Sports.
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"To score the winner at Anfield, 10 years since I last scored... I'll be a bit selfish and enjoy that one
"Everyone knows the importance of the game and that's regardless of league positions. We could be first, second, bottom or second-bottom - it's a massive game.
"It's a great victory and three points we needed to continue our start to this year, it's a massive win for us."
Goalkeeper David de Gea was required to make a string of fine saves before Rooney turned in the winner following Marouane Fellaini's header against the crossbar.
"They had chances but we defended well and scored a fantastic goal," the Spaniard added.
"I hope the victory gives us confidence and hopefully we can win a few in a row."