Congratulations! You made the 'right' choice.
Honestly I was hoping you would give the Fuji a go, & I'm glad you're pleased so far. Who wouldn't be after seeing those colors, just be careful in F2 as it tends to clip your highlights (and shadow detail to a lesser degree - in my experience). I'm sure you've found the skin tones to be very pleasing, especially in F1b. I really don't think any sensor comes closer to the look of film as the S5 does. Have fun experimenting with the different settings!
Are those shots lacking manipulation as they look to be? I can imagine you would have gotten a quite different capture (not knocking the quality of the D90) if you had chosen otherwise. Nothing a little PS can't fix, but from my experience, it's so nice to get the results I've gotten from Fuji without the 'need' to tweak. One last question, have you noticed you're really not missing out on a whole lot in terms of the Aperture features (if you've used it yet)? Again, congrats, have fun, and enjoy a camera that can capture incredible images!