There is still shit tons of real MDMA out there, it just depends on who you know. It's produced in massive quantities, although yes, certainly there are also plenty of people passing off other things as MDMA. Also, MDMA is great, but there's absolutely no reason to think it's the end-all, be-all of all possible euphoric drugs. MDMA could be a research chemical now if it hadn't happened to be discovered long ago, instead of something else.
I'll say that none of the APBs are as good as MDMA. 5-MAPB is probably the closest, that I've tried anyway. I find 6-APB to be mostly a really, really strong body high. But, I find methylone just about as good as MDMA. I prefer AMT to MDMA. There is probably a potential drug that hasn't been synthed yet that is better than MDMA, out of the nearly infinite possible chemicals.