Hi sorry for the late response. I am the Testopel expert I guess, I've been getting it at least 8 years.
I get the procedure done once every 3 months. I get about 10 pellets. Since it's a minor medical procedure there is pain during the injection of anesthesia, not so much you insertion of pellets since you are numb.
The Best thing about pellets: If you hate needles, you do it once and good to go for about 3 months (although I start feeling like crap by beginning of month 3)
The worst: It's a doctor's appointment, minor surgery, a little pain, testopel pellets will extrude (happened to me about 3 times in 8 years which requires re-visit, it will leave a scar, and in some cases I have residual hardness in my butt from previous testopel that either didn't completely dissolve or the body has created a fat tissue around it so that on some spots when I press my finger I can feel lumps.
Hope I didn't scare you: I would do incections but I feel terrible even on the weekly TRT injection protocol and I just can't deal with feeling like that every week. Testopel allows me to at least feel normal for 2 months. Let me know if you have any specific questions.
