What kind of science are you looking for? Do you have a hands-on learner, etc? Are you looking for a textbook and a curriculum? Or do you want to just wing it?
My kids are science-obsessed, so I can tell you what we've been doing (might not be what you're looking for).
My older two kids worked through all the Apologia science textbooks - zoology 1, 2, 3 and botany...and human anatomy/physiology. We also did an astronomy unit study that we put together. We read through the George's Secret Key to the Universe series (written by Stephen Hawking's daughter), listened to talks given by Stephen Hawking, used apps to study the constellations/objects in the sky, we went out every night and in the early morning and identified everything (even watched a meteor shower), read a number of astronomy books from the library (including that darn Horrible Science book about astronomy - Lol)... We've also done other unit studies - one of birds that they had a great time doing. I try to include alot of documentaries (like the Life of Birds series) and we plan to do the Backyard Bird project through Cornell Department of Ornithology. Last spring, they also did a dissection lab - we bought it through Home Science Tools. They watched a biology professor's class video on YouTube and followed along with their own dissections - listening to the teacher explain the different organs, etc. I'm trying to remember, but I think they did a squid...a perch...a crayfish...and it seemed like there was a 4th animal, but I can't remember what it was.
The younger set have been doing science from Janice Van Cleave's books. Also, I have 2 volumes of KONOS and they work through science activities in those volumes. They're currently doing a unit study on sound...so today, we're going to create sound waves with water and see if we can design an experiment showing sound going through objects. The younger set also did a unit study on microbiology. We read A World in a Drop of Water, collected pond samples, watched different videos on microscopic animals from YouTube and identified different things with our microscope. We also bought jeweler's loupes and just explored things - like dragonfly eyes, etc. They've also dissected owl pellets - where you can pull rodent skeletons from the owl pellets and try to identify them with the guide - also from Home Science Tools.
My plans for the winter/spring semester: we're going to work through a number of the TOPS science booklets.
I know CPO science looks good, but I showed it to my science-obsessed kids and I thought they were going to cry. I mean, there was a mutiny in the school room. My tweens were giving speeches about the horrors of such a dry way to learn science - it was like a scene from the French Revolution.
Not sure if any of that helped. Good luck with your search!
Edited to add: I forgot to add this earlier. We've also really enjoyed Snap Circuits and the Thames & Kosmos science kits - specifically Physics Workshops and that Simple Machines kit. We plan to try one of those bridge-building kits from Home Science Tools at some point. In the science chapters in TWTM, SWB lists a number of science kits and their cost, where to buy them, etc.