Chris Wilder was again full of praise for his side following Tuesday night's victory over Millwall at Bramall Lane.
Jack O'Connell and Kieron Freeman netted the goals which paved the way for a win that extends the current unbeaten record to 11 matches and in the process, saw the Blades move seven points clear of nearest challengers Bolton.
Reflecting on the success, United's 14th on home soil this term, Wilder commented: "Millwall had nothing to lose in the final 30 minutes or so and chucked bodies forward. They had a couple of chances when we were defending too deep, but overall we saw the game out well.
"First-half though I have to say we were excellent. We controlled the game, moved the ball quickly and played some fantastic football.
"It is a pressurised part of the season, but going into the 40th game of the league campaign and producing such a showing gives us confidence and belief that we're firmly on the right track.
"When I arrived at Bramall Lane on Tuesday afternoon I looked at the pitch and thought what a lovely night it would be to play football under the lights here."
The Blades boss added: "I asked for a big effort from the supporters and they responded again, another midweek crowd in excess of 20,000 is fantastic and it is important they help get us over the line because we do have some tiring bodies out there.
"We're in good nick though, we're healthy and we're moving confidently down the home straight. Nothing is coming easy though, teams are having a go against us and sometimes the game is too open but it's to be expected at this stage.
"Millwall have enjoyed a good cup run this season, were play-off finalists last season, so they are a decent side who are used to winning."