My '05 AWD is slightly less peppy than the '05 FWD, but I toggle the overdrive button on the shift lever and find it quite capable. I've driven it in the NH White Mtns and it handles well. The '09 AWD 2.4 is peppy!
Both of my AWD's rear differential seals leak. The '09 is new to me this past week with 57k, but didn't take much to top off. The '05 was similar, it didn't take much to top off when I bought it with 83k, and didn't lose much in the last 60k.
I was lucky when I test drove the '05 AWD. It had just snowed and there was several inches of wet slush on the road. The AWD was so significantly more surefooted in the slush then the FWD, that I was sold.