Yeah, our stories have often sounded rather similar. My DS has had one assessment and it looks like it *is* autism but he had such a huge meltdown they weren't able to do any formal testing. We go back in two days.
The specialists we saw were very impressed with our DD, however. They loved her eye-contact. Made me feel more at ease. She picks everything up so quickly too. It took me 6 MONTHS to get DS to even try a sippy cup and I had to get 'mean' about it too. With DD, she took to it on the second try.
She adores her big brother. It's so cute seeing her crawl after him around the house. They're usually playing side by side in his room. She likes his toys better than her own. I think the toys are mostly safe but I still try to keep a close eye on them.