I've enjoyed the gambits quite a bit so far, I set my party leader to target low HP mobs, then target nearest. Then the rest of my characters just target what the party leader targets. It makes my battles pretty much effortless if I throw a few healing gambits in the mix.

Gambits don't make things quite as easy as people make it out to sound like, unless you really know what you're doing. If you set your gambits up wrong you can just get yourself killed, but used effectively, gambits are a great tool.