I second Xorkoth on exploring practically any other 2C-X-Fly. If they're anything like 2C-B-Fly, it'd be worth the trouble to try them.
I'm also curious about 5-HO-XXTs. I'm in the 30% of people that respond well to bufotenin, so I'm quite curious to see if there might be more potential here than commonly assumed.
I'd also like to try 4-AcO-DET - a short acting tryptamine that's easy on the mind and body sounds delightful. I missed the boat on this one. 4-AcO-EPT sounds like it could be a stunner, too.
EPT, MET, and MiPT are definitely on the list, although I might actually get around to trying the latter. I'm somewhat curious about MPT, as well.
I suspect that I tried AET sixteen years ago when it was sold as MDMA - seeing as a I loved it and have never liked MDMA, I'd love to explore AET to see if it was in fact the same glorious material.