TRT benefit injections v gels

[Britman]

I am new to this forum and would appreciate people's opinion on what is generally the safest method of TRT - from what I have read gels appear to best mimic the body's natural supply of testosterone wheareas injectable forms of testosterone cause wide fluctuations in concentrations in testosterone with monthly injections causing supraphysiological doses which is harmful to the body.

Also what are peoples experience of the effects of TRT - has anyone experienced increase in penis girth? Obviously this is unlikely in older patients due to a marked decrease in androgen receptors but if TRT is used to induce puberty in some people I was curious to know its effects (if any) on younger TRT patients (18-30yrs)?

Thanks in advance