I would recommend that you learn how to use both of these calls. The tube call can make every sound a turkey makes including the gobble. It's not that hard to learn to opperate and it can be used with a lot of volume or very soft. I have a Tom Turpin yelper made by Penns Wood that every turkey I have bagged in over 30 years has responded to. I'm very proficient using mouth diaphragms having in my youger days competed in calling contests and winning several. The yelper or wingbone takes quite a while to master, it was a little harder then a mouth call to learn to use. I take a large arsenal of calls with me;

1. Tom Turpin yelper
2. Morgan Caller
3. Screaming Hen boatpaddle
4. Camp cedar box
5. Carolina Assassin glass/3pegs
6. Country Boy slate/2pegs
7. mouth calls about 10 from clear to very raspy made by Qauker Boy, Cane creek, Primos, HS Strut, and some I make myself.
8. predator call
9. goose call
10. crow call
11. I owl with my voice & also gobble & cluck purr and yelp some