http://www.fasebj.org/cgi/content/full/19/11/1552
This study also shows, if I read it right, that not only does 3,5-T2 activate lipolysis, but does so without actually causing a thyrotoxic state, which can lead to hyperthyroidism. Now I don't think that entails that 3,5-T2 is not necessarily suppressive at super high doses, but I do believe it shows that there is no suppressive indications at the doses used in the study; also note that the study is on rats.
Also note that in the first part, the group that was fed the HFD and administered 3,5-T2 (DT2 rats) were 13% lighter and had 29% increase in energy expenditure vs D rats (HFD diet fed only). Also note that muscle mass did not vary between D and N groups. This backed up my original theory that TT-33 would be excellent on a CKD or carb-cycling routine, whereas others feel it would be waste to run it without carbs.
As you can see, I am pretty adamant on gathering factual data on both of these T2 isomers but can only find 3,5 studies and barely any data on 3,3. I'm going to keep scouting for it. By now I am convinced that 3,5 is active, and mildly convinced that it is suppressive even at low doses and proper PCT. On the other hand, I have yet to find anything on 3,3 in regards to it's activity. If anyone can chime in on 3,3 and can provide studies, that'd be great as it would help me place my order and not risk missing out on the current deals. I've already missed the labor day sale so I would like to score on the ones still standing.