I am an avid user of Sustanon 250 (currently on a gram a week once a week). For me, I do not bloat as much as I did on Enanthate. When I started this current run I was also on 100mg a day of test suspension and even that did not bloat me up (along with the sust) with 25mg of Exemestane everyday.
I am still on a gram of sustanon a week but have dropped the test suspension and have added tren suspension every week and the bloat is pretty much non-existent now.
Bear in mind that this is how my body reacts - I have always been able to tolerate test very well. Some would blow up into a water balloon on a gram of test even while using an AI and having a clean diet, so results are going to be different from person to person.