Difference. They’ll just be psyched to have a Switch. If it was a few years ago, I would think about it. But I would bet that the Switch is more than halfway through it’s life cycle, so it doesn’t make sense to me to get the better version when it’ll be on its way out soon anyways.
But, at the same time, its only $50. It wouldn’t be a bad decision to upgrade, but I wouldn’t do it when your kids won’t know the difference.