I have 6 sets of ratcheting wrenches. They are priceless. I have the Gearwrench flex heads, I have the husky stubby flex heads, I have 3 sets of Craftsman pro full polish non flex head, and t0day I ordered the SK spline gpro xxl double box flex heads. The gearwrench "feels" cheaper, and is. The Husky set feels like ****...but I haven't broken one yet, and they have gotten me out of some stick situations where just nothing else would work. The craftsman pro's are my "GO TO's" ...Probably the best tool I own, and most frequently used. I have one powerbuilt (POS). I also bought, and returned the raised panel cman ratcheting wrenches. They are the biggest piles of horse $h!t I have ever used.
The locking flex head has such a fat head that I never bothered with them. I always like to have an open end on my wrenches as well. I double wrench (for reach) on the Cmans regularly (hence why I bought the XXL SK's for $109). Also, generally I really like the fixed head nothing annoys me more than having to hold the floppy headed ratcheting wrench head on the bolt.
My .02 cents