JT IMO there is absolutely no difference between cyp or enanthate (one carbon molecule on the ester is not going to make one lick of difference), and sust well it's really no better than cyp or enanthate.
I know what you are saying ps, but remember that we are all different. I have run long cycles of both by themselves (24 weeks or more) and can honestly state that for me...Cypionate is totally painless and cleaner over Enanthate.
As an example, compare it to this...
Reforvit-B (Lafleure *sic) and Averbol (BD). Both are injectable d-bol (methandrostenolone). ref-b is in an ester of propylene glycol (antifreeze base), whereas Averbol has a more tolerable ester atached to it (can't remember at the moment), but Reforvit shots were horable (probably why everyone took it orally), and Averbol pins were totally pain-free!
As far as the difference between Cyp and Enth (imo) though they are technically different by one molecule only...we have to also look at where that same molecule is bound/inserted. Which will make a difference as to how it metabolizes.
Now as far as Sustenon goes (imo)...when I first started a cycle of Sust I WAS a bit scepticle, I thought that I had received a fake product as I noticed a loss of "mass". But on the other hand...my strength/lifts continued to improve...?? It took a full 5 weeks @ 500-750mgs/week of the Organon to start to manifest. After that it was ALL good! Mass gains as well as definition and vascularity. Btw...all pins again were totally painless!
Again buddy, we are all different! Keep crankin' it! J.