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bittrex is not super intuitve at first but seems to be built/run by competent individuals and works well once you figure out how to do everything. i've never tested their tech support (that i remember) so i can't comment on that. it's still best not to leave your crypto on any exchange long term. also, check instructions for any currency you're trying to withdrawl/deposit so that you don't lose your money as many have caveats/idiosyncrasies.

Well, I just used the bittrex account I set up last summer for the first time. That wasn't horrible.