"I'm happy with the win. I'm feeling good, my confidence is there and the darts are going great and I'm really happy."
De Zwaan was a winner on the PDC Unicorn Development Tour last month, and believes that his form is back to that which took him to the World Matchplay semi-finals last July.
"The Development Tour is a really good opportunity to grow in the PDC circuit," he added.
"In the first tournament I played seven games with a 100 average, and it's also a great opportunity to grow and get confidence as well.
"Last year I reached the semi-final of the World Matchplay and the pressure grows on you. Now I've learned how that feels and I'm dealing with the pressure and playing well again."
Bunting had won through to his first ProTour final for over 18 months with his form on the day, surpassing a quarter-final appearance on the European Tour in March with Wednesday's run.
Monk enjoyed his best finish in a Players Championship event since October 2012 as he followed up a quarter-final appearance in Event Ten last month with another strong showing.
Labanauskas, meanwhile, reached the semi-finals on the ProTour for the first time since securing his Tour Card in January.
The Lithuanian defeated Mark Webster, Jermaine Wattimena, Toni Alcinas, Brendan Dolan and Harry Ward on the day before falling victim to Bunting's fightback in the last four.
The event featured a number of outstanding performances, including a 114.2 average from Peter Wright as he whitewashed Gary Anderson in the last 32.
Krzysztof Ratajski averaged 112.3 in his first round win over Raymond van Barneveld, and went on to make the quarter-finals, while Dave Chisnall and Gerwyn Price also posted 106+ averages.
Last 16
Quarter-Finals
Semi-Finals
Final