I'm a purist...so I hate using extract. Although, apricot is one of the few extract flavorings that I believe actually tastes okay.
I would still suggest fresh apricots. I do an apricot blonde quite frequently. I use 4-5lbs of fresh apricots cubed. I don't use secondary fermentors on lighter beers like this, so I typically freeze the apricots (after cubing) for 2 weeks, then I'll add them to the primary once fermentation has finished. Allow it to sit another few weeks until fermentation stops again, and you're good to go.