Is Photos.app ready for prime time?

Hi, we've used iPhoto since it first came out, and moved to Aperture a couple years ago when iPhoto started bogging down from too many photos. We don't use any advanced Aperture features -- it's just used for storing photos and organizing them into albums.

I'm curious, is the Photos app stable enough for mainstream use? Our photo library is a couple hundred GB in size; can it handle that ok? Is there any fear of losing photos from what is essentially a 1.0 product?

Thanks for any input!...

Is Photos.app ready for prime time?