Hello guys, i'm new to the mining business, bad timing for what i've seen in this thread

I've got my KFA2 GTX 1060 6G at a stable 24 MH/s Eth (W10) and i wonder what would be the most profitable thing to mine with it. (and if you have any advice about it, it would be awesome.

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I'm considering building a rig but don't really know what would be the best GPU to buy, any advice? i'm living in EU and considering investing about 2,5K (6 or 8 GPU). The goal been first, not loose any money over it, then try to earn some while having fun discovering.
ty for your time guys.