I use it all the time for TRT and I use higher potencies-500 for blasts. (4 to 10 week duration)
I like it very much. The brand that I use is painless even at 500...GC.
To me the nice thing about the long ester is that I only need to shoot 1x/week and thats nice.
As for sides, I dont get any. My thinking on that is that the long ester comes on more slowly and is not such an assult to my system.
At any rate I like it, I use it, I will continue to use it and I would very highly recommend Test Deconate to anybody and everybody.
With proper inject technique even at 500 I get no lumps, bumps or brusing and no pain during or afterwards at all.
To me this is the nice way to do Test!