Is this a true title defect? Is quiet title needed?

[Summer Segeleon]

I own a house that has a " cloud", so to speak.

2 brothers owned , and sold, a house . Upon conveying, they both signed the deed , as did their wives,  but one of the brothers names was not mentioned in the deed as it describes who's selling what to whom. 

That was a few transfers ago, so I ended up with a special warranty deed. It's not possible to get a quit claim or resolve it another way aside from quiet title. The attorney I'm working with says that theres a good chance that a bank or buyer will not even consider it a defect when I sell. Your opinion? It sounds like BS to me.