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hi! I use a variety of platforms. Admittedly, I should be more observant of the spread and rates, but this is an ongoing process.
The list:
I started off with buying Bitcoin/Ethereum from Luno.
I used to get a friend from the UK to help me buy Litecoin.
I then started to use Poloniex.
I have recently started to use Cryptopia.

My goal is to educate myself to be more aware of the fees and the spread so that I can choose the most economical option for the trade that I want to make. Currently my mental bandwidth is still occupied by researching altcoins.

Great info. Thanks again!