I tested quite a number of launchers and these are my findings in order of preference:
Nova Prime (both phone and tablet) - Fantastic - won't use any other third party launcher ever again
Apex launcher (similar to Nova) - A very close second to Nova
Aviate launcher - It was a bit buggy and somehow did not do it for me the way Nova did
Action launcher - I really wanted to like this, bit to me it was just a big hype
Buzz launcher - Had nothing to offer that could better Nova
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