Your choices are limited to some extent by where you will be working, if you move in way on the other side of town you will need a couple of cases of Mylanta to deal with the commute-induced heartburn.
That being said, I'd recommend heading to one of the smaller towns outside of Dallas proper, you can get a reasonable commute and there are some NICE places to live.
North: Nice little towns abound if you are willing to drive, like Pilot Point and Celina. Closer in are some of the higher-tone communities like The Colony,
Northeast side: Greenville is mighty nice, but about 40 miles out. Closer in along the same roads is Rockwall, right there close to the lake.
South side: Red Oak/Midlothian area used to be nice, Waxahachie also.
West side: Not much but endless suburb and pavement from Dallas to Weatherford, Fort Worth-Arlington-Dallas have become one big sprawling city. If you like living in suburbs, there are some nice ones but if you want 5 acres and country atmosphere while still working in Dallas, the West side presents a pretty stiff challenge.