They shoot like field points, and my Pro Shop has found them to be the best for penetration on test targets. A lot of local guys in VA use them. Ive shot the practice heads but haven't had a deer in front me with these on.
You'll get a couple of standard comments: Mechanicals suck! will be one of them.
I'd say the standard blades are less likely to have issues than the WTS, the bigger blades won't kill a deer any faster with the right arrow placement. JMO