I rented a Lacrosse from the EE aisle for 2 days at LAX. PCAR. Have to second that I really liked the car A LOT. Very smooth, quiet and powerful. The one I rented was decked out. Nav, back up sensors/camera. Sat radio didn't work though. Really soft leather. I agree that the trunk was small, but that didn't matter for me. If Buick is shooting for Lexus, I think they're well on their way. Very impressed.
One negative that drove me crazy was that the Nav (which was a true blessing in LA when i forgot my gps) was very non-intuitive. Plus i for the life of me couldn't figure out how to only use the nav or radio. But I didn'ttry too hard to figure it out and I'm sure it's great once you know. But just one of those things for rentals that are annoying (like figuring out how to showthe odometerand trip computer on newer cars...i like the old dashboard knob to push!). Inany case, i've never had a rental with nav and probably never will again, so that issue isn't a big deal.