Your going to get thousands of different answers. I use the 100 grain 4 blade wac em. They are fixed. I like them so far. I made a pretty bad shot on the deer I got earlier in the year. I hit near the rib and went out near the ham. I'm not sure what I hit but he only went 50 yards. Customer service is fantastic. The pack I got didn't have enough blades, I got an immediate email back and they sent an entire replacement blade pack. Give them a try.