Wow,, 30 MPG is not bad. We have a 2012 Acura ILX with the 2 Liter and barley getting 32. You're going to love the comfort and the quietness. Our Acura is road noisy and it drives me nuts. One of our friends has a nice 2013 Lincoln MKS and I can't believe how quite it drives, night and day over our Acura. My wife and I are in the looks for a better car, I think we will check out the Buicks. 
Well I think Buick has hit it big with this model here. This is the Astra in Europe and I believe the Excelle in China. Buick for some reason has a great rep with the Chinese. That's probably why Buick is still in the GM stable.
I'm learning new things about this car every day. I'm still trying to turn down the female voice prompt when I press the Intellilink button. I have turned down the NAV voice to a comfortable level, but when I hit that button she scares me a bit sometimes.
The car sticker is less then $30k. To keep down the price a bit, they have left off some familiar items, Homelink remote door opener, the passenger seat is not powered (but 8-way adjustable). My wife said the seat is not an issue as once she has it set, she could care less about moving it around. The manual controls are quite easy to work so not a lot of effort goes into the operation.
The Regal or the Lacrosse would be larger cars and have ALL the options wanted. The new Regal GS has the 270 hp turbo 2.0L and it's said to run really well. But my 2.4L seems to have enough to do a good job and it does not bog down on cruise or going up slight inclines on the freeway.
This picture does not do the interior justice, but it gives an idea of the quality that goes into this car. The only option this car does not have is the Premium wheel option, which is still an 18"x8" like mine, but just a bit different in the spokes.