Plymouth Parkway manager Karl Curtis told BBC Sport:
"It's pure relief. But do you know what? I'm really, really proud of the club and the players.
"It wasn't one of those nights where it was perfect, we had to find another way, we had to change things.
"It wasn't quite working out and that's credit to them, I thought they were really good.
"They started the game much better than us. We had to find a way. We had a plan B and a plan B worked."
Berkhamsted manager Chris Devane told BBC Sport:
"It's gutting. I'm really happy for Plymouth, really good people down here. It's their day in the sun today.
"But we're really disappointed with the decisions, especially the first one, I felt we were in control at the time.
"We just had a really good opportunity and 65 seconds later he gave that penalty and it changed the whole game.
"It's hard not to feel really disappointed when you get a bad decision, but I'm really proud of the lads and the journey they've been on."