Dat compatability question

Hello, this is my first time on the dat forum, usually on the cichlid one. I am considering getting either a indo or a thinbar, both are about $40, the thinbar is 2" and the indo is 3". Is this a good deal on either of these? Also do the different types of dats have different personalities and which one, if either would be most compatible with semi-aggressive cichlids? I know that they grow slow but I am considering slow growing cichlids or wait until the dats are larger before combining them. I've heard different things over the years, tfh magazine said that they are very aggressive and can only be kept with puffers, with the puffers winning any disputes and "Baensch Aquarium Atlas" lists them as being tolerant of each other but defensive with others. Both of these sources are sort of old, but I doubt that their personalities have changed. Now I hear a lot of people stating that they are rather timid and should not be kept with active or more dominant fish. Excuse the essay but I just want to get to the truth. BTW it would at least be a 240 gallon.