Brawlers and prestige classes

[digiman619]

What prestige class options do Brawler's really have? I mean, Martial Training lets them use items and feats that a monk or fighter could, but it doesn't (RAW anyway) let them advance any monk or fighter specific prestige classes (Brother of the Seal comes to mind).

Is there a prestige class that advances a Brawler's martial flexibility and unarmed strike? Or is my Brawler doomed to go prestigeless?

[Knitifine]

I wouldn't say doomed, as most Pathfinder PrCs suck, but yeah... I'm pretty sure there's no PrC that advances martial flexibility.

[Doc_Maynot]

Evangelist, but that advances everything.