I've heard lots of good things about the 70 gr. Speer. A friend used them for a number of years with good success. Others have said good things, my own experience with them is limited to 3 animals ( small sample...) but all 3 , lets just say, coulda gone better.... They needed following, and follow up shots, and all were hit well with the first shot...so I got away from the Speer.
But my experience with them certainly doesn't seem to match others...
Ingwe

"...the left considers you vermin, and they'll kill you given the chance..." Bristoe