I started my testosterone journey with pellets. I n my experience is was a mistake. Most seem to agree it is a poor choice for application. Mostly due to the inability to adjust your protocol once the pellets are in. I t becomes difficult to use ancillary medications. I is hard to zero in your protocol when your shooting at a constantly moving target (testosterone total & Free).
I can't speak for everyone who has gone this route, but I also had issues with the pellets working their way back out through the skin. Not to mention the cost is very prohibitive for something that will most likely be life long.
A year later I still have significant scar tissue from insertion sight.
I have heard some have luck with them, but I have not personally talk to anyone. It might work for you, I would consider this very carefully. I am much happier with injections. Good luck, and above all educate yourself on all options and find a good doctor to guide you.
They are an easy, no fuss option, but the drawbacks mentioned above are real, and significant. I didn't experience wild highs and lows, rather an intial high and a gentle coast to low. You can avoid going in the ditch by getting another insertion a month before they run "out" but that multiplies your cost. In my opinion, the biggest problem is that you cannot adjust your protocol. It doesn't sound bad, until your hormones go sideways.