I really enjoy the sumeike from china it shoots great i can buy cheap from US re-seller so short wait time. I have used theraband and it doesn't hold a candle to this stuff, its made for slingshots. I have shot the Precise it is good as well. Gamekeeper has videos raving about the Gzk I am looking forward to trying it myself. I'm waiting the 3 weeks for it to arrive from China now. There are a ton of ammo combos to band sizes. Simple shot has good video talking about this. Pocket Predator has area dedicated to this in his website also. Good luck figuring it out is 1/2 the fun.
I use .55 Sumeike with 5/16" bb. 5/8" to 1/2" taper over 6.5" for my 33" draw target shooting
.70 Sumeike .44cal lead bb, 1 1/4" to 1" taper over 6.5" to get critters
I use .55 Sumeike with 5/16" bb. 5/8" to 1/2" taper over 6.5" for my 33" draw target shooting
.70 Sumeike .44cal lead bb, 1 1/4" to 1" taper over 6.5" to get critters