I'd have to say no they dont cause , or just about the same... But blood levels are harder to keep at a contstant because of the mixture of test that is in sust, you can't tell when one is going to peak and then fall off and that will cause blood spikes and may affect gains. I would go with enanthate or Cyp because single ester test is easier to keep at a good level in your blood.. go with the enanthate or cyp
From my experience 500mg of sust has always given me much less bloat than 500mg of either cyp or eth. I beleive it's because of the mixture in the sust, when u take the sust about 1/2 is in and out of your system much quicker.
I'm not really gonna answer your question but what I would say is by using arimedex effectively bloat will be minimal so I would not be overly concerned.
I would think there would be more bloat with more aromatization, but I don't think that would happen with enanthate vs. sust. Could be wrong though. Where's Andy13 when you need him?