I have two suggestions
One is an indy studio called Dancemakers (west side just off of Camp bowie). I never have take privet there so I don't know if they pressure any but never heard any complaints. I have taken groups as they allow non students to take them which is nice. They also have a Fri night dance that is open to all. You do not find that at other studios. dancemakers.com
The other a place now known as BIRC or if you been around FTW for a while used to be LRMA They offer group classes three nights a week three classes a night. You will not get a lot of technique but a lot of patterns. The instructor also does privates at 40/hour last I heard. check www.Timetodance.com for details. Also if you are looking for good ballroom dances look up Tangofoot and Metrodance clubs. they do monthly dances many times with live bands.