$30K to spend? It really depends on what you like. You can get a very nice new car with a bumper to bumper warranty or a very nice older luxury car and get a certified used car that extends the warranty to longer than the original factory warranty.
I REALLY like the new Impala. They are good looking, well optioned, sporty and reliable.
Here's one (its just an example because it is in Wichita).
Its a 2015 with 15K miles and its only $20,000.
OR, here's the super version (LTZ) and its $25K
The Chrysler 300 is very nice (but DO NOT UNDER ANY CIRCUMSTANCES get the 2.7L engine!)
If you like a big car, the Toyota Avalons are very nice. I think they are little soulless, but still nice, good size and reliable
How about a 2015 3 series (too small for my taste, but still very nice)
OR, a 5 series!
Or, if it were me, I would buy this gorgeous car!