Decor Nails is a convenient place to go get your nails/pedi done near Woodlawn/SouthPark. As soon as you walk in to the bright space on the 2nd level of Park Selwyn Terrace (say upstairs from Mexican 1900), you are greeted by the nail professionals. It has probably 8 pedi stations and about 7 mani stations (don't quote me on that). They have comfortable chairs and a wide variety of colors to choose from (especially gel polish). They do a nice job on the manicure (better than Polished or Re Salon) too. They take about 1 hour for pedi and less for manis, especially with gel, but give a nice hand/arm massage (though not shoulder like some places).
This is a fave of my friend Rachel and so I have been several times with her. It will never replace my fave, Modern Nails in SouthEnd, but it's a fine alternative. Similar to Modern, they seem to recognize and treat loyal customers well.