i agree that the darklight wizard sucks. time to pull out some crappy pathfinder material.
Gunslinger: the mascot class of ultimate combat. built as complete fanservice to the steampunk fans, has only one good archetype, the damned pistolero, which requires a heavy exploitation of free actions and either a 3rd arm or a prehensile tail to pull off. is the most frequently banned class next to the summoner. in fact, the class is constantly being modified because the gun rules are so damned horrid yet so exploitable. the guns don't even have a decent range, barely farther than thrown weapons, and both firearms, and their ammunition are so expensive. so the class is provided a patch feat intended to fix price issues, and they are still too expensive. they have nowhere near enough grit to be viable. running out faster than the damned speed of light.
the UC Samurai: one of three classes in ultimate combat, it is a selfish modified cavalier that tries to encompass too many facets horribly, it tries to be a master of iaijutsu and fails, it tries to be a mounted archer and fails, unless you have a DM lenient enough to allow a flying mount. it is expected to wear the best armors in the game, which are the overpowered yet cheap oriental ones.
the UC Ninja: essentially a more selfish rogue, the 3rd class of ultimate combat people have an aversion because of the japanese flavor, even MADer than the CA ninja. unless you want to be every bard's personal charmed Geisha. gives up trapfinding for poison use and evasion for a Ki pool.
the Magus: pathfinder's duskblade equivalent from ultimate magic, restricted to 1handed slashing weapons to use any class abilities at all, and must have a free offhand.
Cavalier: guy on a horse. that's the entirety of the class. published in the APG. useless unless you have a DM that allows a flying mount.