what would you pick.
a 1080 card, or a 1080ti card (price is excactly 20% more for the ti).
1080Ti is 20-25% more profitable (depends on the algo) so if the price differs 20% I would go with the Ti.
Plus you will have a more up to date GPU to keep up with the global hashrate.
Try to get Asus, Zotac, MSI or Gigabyte Aorus. Don't go for some shitty case, you will experience lesser hashrate and higher temperatures.