Gareth Jenkins said he was delighted with his side's performance that brought his first win as Wales coach.
Jenkins said the victory gives him a selection headache
"It is a nice feeling," he said after Saturday's 38-20 victory in Cardiff. "It was an enjoyable Test and for us it was a job well done.
"We had to make more tackles than in most games, we defended well, we were efficient and we had a good set piece.
"We had a good score at half time. We never felt the game was over, we had to work hard and got a good result."
Wales raced into a 24-0 lead after 30 minutes as Mark Jones, James Hook and Kevin Morgan crossed for converted tries.
Ceri Sweeney added Wales' fifth try after the break, but the visitors also managed touchdowns through Justin Va'a, Seilala Mapasua and Kameli Ratuvou.
Jenkins had made 14 changes to the side that drew against Australia last weekend and said the victory highlighted the squad's strength in depth.
Sonny Parker gave a man-of-the-match performance
"It has been particularly pleasing from my point of view," said Jenkins, whose side faces Canada next Friday before the autumn series ends with New Zealand's visit the following Saturday.
"I am happy where we are. The draw last week was about what we deserved.
"We changed selection this week and it has been a very positive camp. This result will give us more determination.
"I have got selection headaches, there is no doubt at all about that, and that is a good place to be."
Centre Sonny Parker shone on his return to the Wales side for the first time in 12 months
Parker ended his nine-month international retirement last week, and said: "I really enjoyed it. I haven't played a game like that for a while.
"They came out and wanted to play some rugby and that was really hard to defend.
"It is excellent for us. The guys had to prove themselves today and personally I think they did very well."
All credit to Wales, they scored some great tries
Pacific Islanders coach Pat Lam
The Pacific Islanders' lack of pre-match preparation was evident in their sluggish and disjointed first-half display.
But coach Pat Lam, who had won all his encounters against Wales as a player, said he was encouraged by the second half performance as they prepare to face Scotland and Ireland.
"We got off to a bad start and looked like a team that has just come together," said Lam.
"Wales put us under a lot of pressure and they looked very good when they were going forward. They are really attacking.
"We clawed our way back into the game when we managed to hold onto the ball.
"At half time we talked about positioning, looking after the ball and using the ball. We were outstanding in the second half.
"When we get a plan and the boys get used to it we will be OK. But all credit to Wales, they scored some great tries."