It's unknowable.
Toyota's are about the best cars made...but I can find a guy who broke one driving it home from the dealership.
Dan Thome has hit it very close with his comments that at least you get to keep shooting a perazzi when the spring goes. Yes, they go at bad times - obviously, ANY time you're on the line (which is when most guns break, duh!) is a bad time to have something crap out on you.
Yeah, I spend about $50 a year on springs and pins, and my 3 year old gun has been rebuilt once already - but then again, I shot 34 bags of shot this year BEFORE JULY. And this spring wasn't particularly heavy...leagues, practice, registered, skeet, f-ing around at the club, sporting, it all adds up.
The knowledge that there's a spare trigger in my case and 3 springs and 3 pins beyond that is very comforting.
Get what you want. Both are fine guns. Both have advantages and disadvantages. If you're in the market for a high dollar gun and are worried about buying a couple springs, you're worried about the wrong thing. Or you're spending more than you can afford.