Unfortunately, monster feats are usually not legal for PCs unless you have a very permissive GM in a home game.
Personally. I like Magus 3 with the wand wielder arcana to spell combat with a wand of true strike.
My personal experience is about 50:50. Usually it's a gut reaction to say NO! because a new or casual DM thinks that "Bestiary feat request auto = POWERGAMEMINMAXCHEESERTRYINGTOBREAKMYGAMEOHNOES!"
Of the several DM's I have played with that had that reaction I am usually able to talk it out with them and let them see that those feats are pretty well balanced. Then again, I think 70% of those instances were with ability focus which is a pretty weak feat. So ymmv.
In my games bestiary feats are allowed without even asking, but then so are 3.5 feats and several 3rd party company feats.