you can still find 6oxo clones in stock at alot of places, fyi, hell i can even still find sites that have 4-androstenediol still in stock online, you just have to search, but finding somplace with 6-oxo ergopharms, or some other clone should be very very easy.
but to answer your question, i like 6-bromo. there is also formestane. and also atd. these are the three otc a.I.'s I know off the top of my head. I personally dont like atd. never used formestante. but like 6-bromo better than atd, alot.