Genarr,
How old are you? I remember you saying you've been around a while. I was having a conversation on this exact topic with a guy I used to train with a little. He's in his early 40's and said that in the last 2 years he's "rediscovered" deca and thinks its the best one for him at this stage. He bases his cycles on deca now, not test. I find this interesting.
-Bill