Palace go to Watford at lunchtime today aiming to make the semi-finals of the FA Cup for the second time in three seasons.
McArthur said: “As a squad, this is the best I've been involved in at Palace, and it seems to be getting better.
“I would be happy with any player starting, it's that good. If the manager makes six or seven changes, the team doesn't get weaker.
"The talent level is very high."