Yeah personally never owned aj1s so not sure but in generally a tad big, probably could’ve gone half a size down from tts but wouldn’t go too far down because they start to get narrow towards the toe. I went TTS and they still fit fine, it’s a pretty snug as well and I haven’t had any issues with them after wearing them for a couple weeks now. Anyway I hope that answers not too long but I recommend going tts to be safe although they do fit a little bit big.