Idex is just an trading market that had issue about the volume. I still prefer Etherdelta back in the old days and now forkdelta because you can actually sell right now via p2p trading technique and also it is more safe to trade in there for me.
somehow, as much as possible I will not sell my assets there. indeed, some of the assets of most bounties that have no value are there. if it's not too important I will avoid etherdelta, forkdelta, and idex. if there are other better exchanges with greater volume or better trust, why should you choose them.